The Klemm Leichtflugzeugbau GmbH ("Klemm Light Aircraft Company") was a German aircraft manufacturer noteworthy for sports and touring planes of the 1930s.
160-560: The company was founded in Böblingen in 1926 by Dr. Hanns Klemm, who had previously worked for both Zeppelin and the Daimler Aircraft Company . While working at Daimler, Klemm had developed his ideas for a light aircraft, to be made of wood for strength and lightness. It should be easy to manufacture, aerodynamically efficient with low mass and wing loading , for which a low-powered engine would be sufficient. Klemm's first design,
320-562: A " Special Relationship " with the United Kingdom and strong ties with Canada , Australia , New Zealand , the Philippines , Japan , South Korea , Israel , and several European Union countries ( France , Italy , Germany , Spain , and Poland ). The U.S. works closely with its NATO allies on military and national security issues, and with countries in the Americas through
480-553: A bright golden finger, quite small (...) Then there was flashes near the ground—and the shaking noise. It was like Milton —then there was war in heaven. (...) I cannot get over it, that the moon is not Queen of the sky by night, and the stars the lesser lights. It seems the Zeppelin is in the zenith of the night, golden like a moon, having taken control of the sky; and the bursting shells are the lesser lights. The raids continued in 1916. In December 1915, additional P class Zeppelins and
640-410: A combination of Pomeroy and Brock explosive ammunition with Buckingham incendiary ammunition was used in fighter aircraft machine guns during 1916. The British had been concerned over the threat posed by Zeppelins since 1909, and attacked the Zeppelin bases early in the war. LZ 25 was destroyed in its hangar at Düsseldorf on 8 October 1914 by bombs dropped by Flt Lt Reginald Marix, RNAS, and
800-529: A combination of engine failure and high winds, L 3 crashing on the Danish island of Fanø without loss of life and L 4 coming down at Blaavands Huk ; eleven crew escaped from the forward gondola, after which the lightened airship with four crew members remaining in the aft engine car was blown out to sea and lost. At this stage in the war there was no clear doctrine for the use of Naval airships. A single large Zeppelin, L 5, played an unimportant part in
960-669: A consequence of the RNAS raid both the Army and Navy withdrew from their bases in Belgium. After an ineffective attack by L 10 on Tyneside on 15–16 June the short summer nights discouraged further raids for some months, and the remaining Army Zeppelins were reassigned to the Eastern and Balkan fronts. The Navy resumed raids on Britain in August, when three largely ineffective raids were carried out. On 10 August
1120-474: A continuous patrol of two fighters over Paris at an altitude from which they could promptly attack arriving zeppelins avoiding the delay required to reach the zeppelin altitude. Two further missions were flown against Paris in January 1916: on 29 January LZ 79 killed 23 and injured another 30 but was so severely damaged by anti-aircraft fire that it crashed during the return journey. A second mission by LZ 77
1280-533: A coordinated, continent-wide military effort. Finally, deteriorating relations between the British military establishment and the colonists, relations that were already less than positive, set the stage for further distrust and dislike of British troops. Following their victory in the French and Indian War, Britain began to assert greater control over local colonial affairs, resulting in colonial political resistance ; one of
1440-522: A decentralized government that operated until 1789. After the British surrender at the siege of Yorktown in 1781 American sovereignty was internationally recognized by the Treaty of Paris (1783), through which the U.S. gained territory stretching west to the Mississippi River, north to present-day Canada, and south to Spanish Florida . The Northwest Ordinance (1787) established the precedent by which
1600-539: A fairly small externally-mounted gondola for passengers and crew beneath the frame. This space was never heated, because fire outside of the kitchen was considered too risky, and during trips across the North Atlantic or Siberia passengers were forced to bundle in blankets and furs to keep warm and were often miserably cold. By the time of the Hindenburg several important changes had made traveling much more comfortable:
1760-407: A few prominent industrialists , largely by their formation of trusts and monopolies to prevent competition. Tycoons led the nation's expansion in the railroad , petroleum , and steel industries. The United States emerged as a pioneer of the automotive industry . These changes were accompanied by significant increases in economic inequality , slum conditions , and social unrest , creating
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#17328518912881920-404: A fire which despite the attendance of 22 fire engines caused over half a million pounds of damage: Mathy then turned east, dropping his remaining bombs on Liverpool Street station . The Zeppelin was the target of concentrated anti-aircraft fire, but no hits were scored and the falling shrapnel caused both damage and alarm on the ground. The raid killed 22 people and injured 87. The monetary cost of
2080-594: A floating assembly-hall or hangar in the Bay of Manzell near Friedrichshafen on Lake Constance (the Bodensee ). The intention behind the floating hall was to facilitate the difficult task of bringing the airship out of the hall, as it could easily be aligned with the wind. The LZ 1 (LZ for Luftschiff Zeppelin , or "Zeppelin Airship") was 128 metres (420 ft) long with a hydrogen capacity of 11,000 m (400,000 cu ft),
2240-644: A global reach. The U.S. is a founding member of the World Bank , Organization of American States , NATO , and the United Nations , as well as a permanent member of the UN Security Council . The first documented use of the phrase "United States of America" is a letter from January 2, 1776. Stephen Moylan , a Continental Army aide to General George Washington , wrote to Joseph Reed , Washington's aide-de-camp , seeking to go "with full and ample powers from
2400-521: A lecture given to the Union of German Engineers gained their support. Zeppelin also sought support from the industrialist Carl Berg , then engaged in construction work on the second airship design of David Schwarz . Berg was under contract not to supply aluminium to any other airship manufacturer, and subsequently made a payment to Schwarz's widow as compensation for breaking this agreement. Schwarz's design differed fundamentally from Zeppelin's, crucially lacking
2560-521: A letter to Klemm, who had helped outfit the plane for the long journey, stating "your beautiful little machine, the L25a has carried me through wind, snow and torrential rain without any damage to myself, the plane and the engine." In 1931 Elly Beinhorn became the second woman to fly from Europe to Australia flying a Klemm Kl 26 equipped with an Argus engine, and winning the Hindenburg Cup. Klemm suffered
2720-479: A mortgage of Count von Zeppelin's wife's estate, and a 100,000 mark contribution by Count von Zeppelin himself allowed the construction of LZ 2 , which made only a single flight on 17 January 1906. After both engines failed it made a forced landing in the Allgäu mountains, where a storm subsequently damaged the anchored ship beyond repair. Incorporating all the usable parts of LZ 2, its successor LZ 3 became
2880-418: A navigational error caused by high winds and poor visibility. The commander judged it proper to land the airship to demonstrate that the incursion was accidental, and brought the ship down on the military parade-ground at Lunéville . The airship remained on the ground until the following day, permitting a detailed examination by French airship experts. In 1909, Count Zeppelin founded the world's first airline,
3040-583: A period of heightened, overt racism following Reconstruction, a time often called the nadir of American race relations . A series of Supreme Court decisions, including Plessy v. Ferguson , emptied the Fourteenth and Fifteenth Amendments of their force, allowing Jim Crow laws in the South to remain unchecked, sundown towns in the Midwest, and segregation in communities across the country , which would be reinforced by
3200-488: A prominent leader in the early 1960s. The Great Society plan of President Lyndon Johnson 's administration resulted in groundbreaking and broad-reaching laws, policies and a constitutional amendment to counteract some of the worst effects of lingering institutional racism . The counterculture movement in the U.S. brought significant social changes, including the liberalization of attitudes toward recreational drug use and sexuality . It also encouraged open defiance of
3360-477: A scheduled service between cities, but generally operated pleasure cruises, carrying twenty passengers. The airships were given names in addition to their production numbers. LZ 6 first flew on 25 August 1909 and was accidentally destroyed in Baden-Oos on 14 September 1910 by a fire in its hangar. The second DELAG airship, LZ 7 Deutschland , made its maiden voyage on 19 June 1910. On 28 June it set off on
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#17328518912883520-518: A sense of manifest destiny . The Missouri Compromise attempted to balance the desire of northern states to prevent the expansion of slavery into new territories with that of southern states to extend it, admitting Missouri as a slave state and Maine as a free state. It further prohibited slavery in all other lands of the Louisiana Purchase north of the 36°30′ parallel . As Americans expanded further into land inhabited by Native Americans,
3680-603: A sense of American identity as well. Men who otherwise never left their own colony now traveled across the continent to fight alongside men from decidedly different backgrounds but who were no less "American". British officers trained American officers for battle, most notably George Washington ; these officers would lend their skills and expertise to the colonists' cause during the American Revolutionary War to come. In addition, colonial legislatures and officials found it necessary to cooperate intensively in pursuit of
3840-688: A sense of national pride regarding his work, and spontaneous donations from the public began pouring in, eventually totalling over six million marks. This enabled the Count to found the Luftschiffbau Zeppelin GmbH (Airship Construction Zeppelin Ltd.) and the Zeppelin Foundation . Before World War I (1914–1918) the Zeppelin company manufactured 21 more airships. The Imperial German Army bought LZ 3 and LZ 5 (a sister-ship to LZ 4 which
4000-505: A setback in 1935 when the prototype Kl 35 crashed during testing at Rechlin . This was explained as a material defect, but was more likely due to overstressing of the wings. Klemm revised and brought the Kl 35 up to the required specifications and manufacturing began. Around 2,000 of the aircraft were built, both at Klemm's plant, and by Fieseler , and later by the Czech company Moravan Otrokovice , for
4160-510: A short career, first flying on 30 March 1911 and becoming damaged beyond repair when caught by a strong cross-wind while being walked out of its shed on 16 May. The company's fortunes changed with the next ship, LZ 10 Schwaben , which first flew on 26 June 1911 and carried 1,553 passengers in 218 flights before catching fire after a gust tore it from its mooring near Düsseldorf. Other DELAG ships included LZ 11 Viktoria Luise (1912), LZ 13 Hansa (1912) and LZ 17 Sachsen (1913). By
4320-476: A third raid on 4 May ended with it being brought down by anti-aircraft fire. The crew survived but were taken prisoner. When Romania entered the war in August 1916, LZ 101 was transferred to Yambol and bombed Bucharest on 28 August, 4 September and 25 September. LZ 86 transferred to Szentandras and made a single attack on the Ploiești oil fields on 4 September but was wrecked on attempting to land after
4480-459: A voyage to publicise Zeppelins, carrying 19 journalists as passengers. A combination of adverse weather and engine failure brought it down at Mount Limberg near Bad Iburg in Lower Saxony, its hull getting stuck in trees. All passengers and crew were unhurt, except for one crew member who broke his leg when he jumped from the craft. It was replaced by LZ 8 Deutschland II , which also had
4640-457: A year). Juvenile correctional facilities are operated by local or state governments and serve as longer-term placements for any minor adjudicated as delinquent and ordered by a judge to be confined. As of January 2023, the United States has the sixth-highest per capita incarceration rate in the world—531 people per 100,000 inhabitants—and the largest prison and jail population in
4800-571: Is believed to be the first widespread culture in the Americas. Over time, indigenous North American cultures grew increasingly sophisticated, and some, such as the Mississippian culture , developed agriculture , architecture , and complex societies . In the post-archaic period , the Mississippian cultures were located in the midwestern , eastern , and southern regions, and the Algonquian in
4960-492: Is known as the presidential system , in contrast to the parliamentary system , where the executive is part of the legislative body. Many countries around the world imitated this aspect of the 1789 Constitution of the United States , especially in the Americas. The Constitution is silent on political parties. However, they developed independently in the 18th century with the Federalist and Anti-Federalist parties. Since then,
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5120-438: Is now the United States experienced conflicts with Native Americans, they also engaged in trade, exchanging European tools for food and animal pelts. Relations ranged from close cooperation to warfare and massacres. The colonial authorities often pursued policies that forced Native Americans to adopt European lifestyles, including conversion to Christianity. Along the eastern seaboard, settlers trafficked African slaves through
5280-542: Is the federal agency charged with addressing most environmental-related issues . The idea of wilderness has shaped the management of public lands since 1964, with the Wilderness Act . The Endangered Species Act of 1973 provides a way to protect threatened and endangered species and their habitats. The United States Fish and Wildlife Service implements and enforces the Act. In 2024, the U.S. ranked 34th among 180 countries in
5440-584: The Allies of World War I , helping to turn the tide against the Central Powers . In 1920, a constitutional amendment granted nationwide women's suffrage . During the 1920s and '30s, radio for mass communication and the invention of early television transformed communications nationwide. The Wall Street Crash of 1929 triggered the Great Depression , which President Franklin D. Roosevelt responded to with
5600-548: The Atlantic slave trade . The original Thirteen Colonies that would later found the United States were administered as possessions of Great Britain , and had local governments with elections open to most white male property owners . The colonial population grew rapidly, eclipsing Native American populations; by the 1770s, the natural increase of the population was such that only a small minority of Americans had been born overseas. The colonies' distance from Britain allowed for
5760-557: The Battle of the Dogger Bank on 24 January 1915. L 5 was carrying out a routine patrol when it picked up Admiral Hipper 's radio signal announcing that he was engaged with the British battle cruiser squadron. Heading towards the German fleet's position, the Zeppelin was forced to climb above the cloud cover by fire from the British fleet: its commander then decided that it was his duty to cover
5920-773: The Bering land bridge more than 12,000 years ago, and formed various civilizations and societies . British colonization led to the first settlement of the Thirteen Colonies in Virginia in 1607. Clashes with the British Crown over taxation and political representation sparked the American Revolution , with the Second Continental Congress formally declaring independence on July 4, 1776. Following its victory in
6080-529: The Environmental Performance Index . The country joined the Paris Agreement on climate change in 2016 and has many other environmental commitments. The United States is a federal republic of 50 states and a separate federal capital district, Washington, D.C. It also asserts sovereignty over five unincorporated territories and several uninhabited island possessions . The U.S. is
6240-493: The Federal Bureau of Investigation (FBI) and the U.S. Marshals Service have national jurisdiction and specialized duties, such as protecting civil rights , national security and enforcing U.S. federal courts ' rulings and federal laws. State courts conduct most civil and criminal trials, and federal courts handle designated crimes and appeals of state court decisions . There is no unified "criminal justice system" in
6400-688: The Great Lakes , Mississippi River and Gulf of Mexico . British colonization of the East Coast began with the Virginia Colony (1607) and Plymouth Colony (1620). The Mayflower Compact and the Fundamental Orders of Connecticut established precedents for representative self-governance and constitutionalism that would develop throughout the American colonies. While European settlers in what
6560-701: The Great Lakes region and along the Eastern Seaboard , while the Hohokam culture and Ancestral Puebloans inhabited the southwest . Native population estimates of what is now the United States before the arrival of European immigrants range from around 500,000 to nearly 10 million. Christopher Columbus began exploring the Caribbean for Spain in 1492, leading to Spanish-speaking settlements and missions from Puerto Rico and Florida to New Mexico and California . France established its own settlements along
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6720-516: The House of Representatives , a lower house based on population; and the Senate , an upper house based on equal representation for each state. Federalism provides substantial autonomy to the 50 states, while the country's political culture promotes liberty , equality , individualism , personal autonomy , and limited government . One of the world's most developed countries , the United States has had
6880-674: The Luftwaffe as a trainer. During World War II Klemm produced and designed a range of aircraft, such as the Klemm Kl 105, Kl 106 and Kl 107, as well as the Klemm Kl 151 and Kl 152. The Klemm Aircraft Company was refounded in 1952 after the post-war ban on aircraft construction was lifted. Klemm himself by this time was semi-retired, and the company was run by his son Hanns-Jürgen Klemm. This company's first model, Kl 107-A, made its maiden flight in mid-1956. In April 1959, Bölkow took over Klemm, and with
7040-580: The Midwest . At the same time, about one million French Canadians migrated from Quebec to New England . During the Great Migration , millions of African Americans left the rural South for urban areas in the North. Alaska was purchased from Russia in 1867. The Compromise of 1877 effectively ended Reconstruction and white supremacists took local control of Southern politics . African Americans endured
7200-672: The National Park Service and other agencies. About 28% of the country's land is publicly owned and federally managed, primarily in the Western States . Most of this land is protected , though some is leased for commercial use, and less than one percent is used for military purposes. Environmental issues in the United States include debates on non-renewable resources and nuclear energy , air and water pollution , biodiversity , logging and deforestation , and climate change . The U.S. Environmental Protection Agency (EPA)
7360-634: The New Deal , a series of sweeping programs and public works projects combined with financial reforms and regulations . All were intended to protect against future economic depressions. Initially neutral during World War II , the U.S. began supplying war materiel to the Allies of World War II in March 1941 and entered the war in December after the Empire of Japan 's attack on Pearl Harbor . The U.S. developed
7520-759: The Organization of American States and the United States–Mexico–Canada Free Trade Agreement . In South America, Colombia is traditionally considered to be the closest ally of the United States. The U.S. exercises full international defense authority and responsibility for Micronesia , the Marshall Islands , and Palau through the Compact of Free Association . It has increasingly conducted strategic cooperation with India , but its ties with China have steadily deteriorated. Since 2014,
7680-638: The Pentium microprocessor in accordance with Moore's law , rechargeable lithium-ion batteries , the first gene therapy trial, and cloning either emerged in the U.S. or were improved upon there. The Human Genome Project was formally launched in 1990, while Nasdaq became the first stock market in the United States to trade online in 1998. In the Gulf War of 1991, an American-led international coalition of states expelled an Iraqi invasion force that had occupied neighboring Kuwait . The September 11 attacks on
7840-523: The Soviet Union's collapse and the end of the Cold War in 1991, the U.S. emerged as the world's sole superpower , wielding significant geopolitical influence globally . The U.S. national government is a presidential constitutional federal republic and liberal democracy with three separate branches : legislative , executive , and judicial . It has a bicameral national legislature composed of
8000-576: The Spanish–American War . (The Philippines was granted full independence from the U.S. on July 4, 1946, following World War II. Puerto Rico and Guam have remained U.S. territories.) American Samoa was acquired by the United States in 1900 after the Second Samoan Civil War . The U.S. Virgin Islands were purchased from Denmark in 1917. The United States entered World War I alongside
8160-473: The United States in 1899. After the outstanding success of the Zeppelin design, the word zeppelin came to be commonly used to refer to all forms of rigid airships . Zeppelins were first flown commercially in 1910 by Deutsche Luftschiffahrts-AG (DELAG), the world's first airline in revenue service. By mid-1914, DELAG had carried over 10,000 fare-paying passengers on over 1,500 flights. During World War I ,
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#17328518912888320-429: The benzole plant at Skinningrove and three set off to bomb London: two were forced to turn back but L 13, commanded by Kapitänleutnant Heinrich Mathy reached London. The bomb-load included a 300-kilogram (660 lb) bomb, the largest yet carried. This exploded near Smithfield Market , destroying several houses and killing two men. More bombs fell on the textile warehouses north of St Paul's Cathedral , causing
8480-399: The cotton gin made the institution increasingly profitable for Southern elites . This sectional conflict regarding slavery culminated in the American Civil War (1861–1865). Eleven slave states seceded and formed the Confederate States of America , while the other states remained in the Union . War broke out in April 1861 after the Confederates bombarded Fort Sumter . After
8640-413: The fall of communism and the collapse of the Soviet Union , which marked the end of the Cold War and left the United States as the world's sole superpower . The 1990s saw the longest recorded economic expansion in American history , a dramatic decline in U.S. crime rates , and advances in technology . Throughout this decade, technological innovations such as the World Wide Web , the evolution of
8800-445: The largest nominal GDP since about 1890 and accounted for over 15% of the global economy in 2023. It possesses by far the largest amount of wealth of any country and has the highest disposable household income per capita among OECD countries. The U.S. ranks among the world's highest in economic competitiveness , productivity , innovation , human rights , and higher education . Its hard power and cultural influence have
8960-406: The 1775 Battles of Lexington and Concord , igniting the American Revolutionary War . At the Second Continental Congress , the colonies appointed George Washington commander-in-chief of the Continental Army , and created a committee that named Thomas Jefferson to draft the Declaration of Independence . Two days after passing the Lee Resolution to create an independent nation the Declaration
9120-408: The 1775–1783 Revolutionary War , the country continued to expand westward across North America , resulting in the dispossession of native inhabitants . As more states were admitted , a North–South division over slavery led to the secession of the Confederate States of America , which fought states remaining in the Union in the 1861–1865 American Civil War . With the victory and preservation of
9280-466: The 2010s, political polarization in the country increased between liberal and conservative factions. This polarization was capitalized upon in the January 2021 Capitol attack , when a mob of insurrectionists entered the U.S. Capitol and sought to prevent the peaceful transfer of power in an attempted self-coup d'état . The United States is the world's third-largest country by total area behind Russia and Canada. The 48 contiguous states and
9440-440: The 24-hour trial flight ended when LZ 4 had to make a landing at Echterdingen near Stuttgart because of mechanical problems. During the stop, a storm tore the airship away from its moorings on the afternoon of 5 August 1908. It crashed into a tree, caught fire, and quickly burnt out. No one was seriously injured. This accident would have finished Zeppelin's experiments, but his flights had generated huge public interest and
9600-437: The 6 m/s ( 21.6 km/h (13.4 mph) ) velocity attained by the French airship La France . Despite this performance, the shareholders declined to invest more money, and so the company was liquidated, with Count von Zeppelin purchasing the ship and equipment. The Count wished to continue experimenting, but he eventually dismantled the ship in 1901. Donations, the profits of a special lottery , some public funding,
9760-426: The American West have an alpine climate . The climate is arid in the Southwest, Mediterranean in coastal California , and oceanic in coastal Oregon , Washington , and southern Alaska . Most of Alaska is subarctic or polar . Hawaii , the southern tip of Florida and U.S. territories in the Caribbean and Pacific are tropical . States bordering the Gulf of Mexico are prone to hurricanes, and most of
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#17328518912889920-488: The Army and the Navy. At the war’s outset, the Army assumed control of the three remaining DELAG airships, having already decommissioned three older Zeppelins, including Z I. Throughout the war, the Navy primarily used its Zeppelins for reconnaissance missions. Although Zeppelin bombing raids, especially those aimed at London, captivated the German public’s imagination, they had limited material success. Nevertheless, these raids—along with later bombing raids by airplanes—led to
10080-410: The British 3rd Light Cruiser squadron which was in the area. HMS Yarmouth launched its Sopwith Pup , and Sub-Lt. B. A. Smart succeeded in shooting the Zeppelin down in flames. The cause of the airship's loss was not discovered by the Germans, who believed the Zeppelin had been brought down by anti-aircraft fire from ships. At the beginning of the conflict, the German command had high hopes for
10240-502: The Daimler L.15, was a light aircraft with a single 7.5 hp (5.5 kW) Indian motorcycle engine. This aircraft flew in early 1919, although a 12 hp (8.8 kW) Harley-Davidson engine was used instead of the originally-envisioned engine. Klemm then designed a squared-off version of the cylindrical fuselage of the L.15, which could be more easily built, which he designated the L.20, and he founded his own company to produce it. This aircraft, of which more than 100 were built,
10400-420: The Declaration of Independence on July 4, 1776. The term "United States" and the initialism "U.S.", used as nouns or as adjectives in English, are common short names for the country. The initialism "USA", a noun, is also common. "United States" and "U.S." are the established terms throughout the U.S. federal government , with prescribed rules. In English, the term "America" rarely refers to topics unrelated to
10560-542: The Deutsche Luftschiffahrts-Aktiengesellschaft (German Airship Travel Corporation), generally known as DELAG to promote his airships, initially using LZ 6, which he had hoped to sell to the German Army. Notable aviation figures like Orville Wright offered critical perspectives on the Zeppelin; in a September 1909 New York Times interview, Wright compared airships to steam engines nearing their developmental peak, while seeing airplanes as akin to gas engines with untapped potential for innovation.The airships did not provide
10720-404: The District of Columbia occupy a combined area of 3,119,885 square miles (8,080,470 km ). The coastal plain of the Atlantic seaboard gives way to inland forests and rolling hills in the Piedmont plateau region. The Appalachian Mountains and the Adirondack massif separate the East Coast from the Great Lakes and the grasslands of the Midwest . The Mississippi River System ,
10880-458: The Elder concluded that major military resources needed to be devoted to North America to win the war against France. For the first time, the continent became one of the main theaters of what could be termed a " world war ". The British colonies' position as an integral part of the British Empire became more apparent during the war, with British military and civilian officials becoming a more significant presence in American life. The war increased
11040-407: The German military made extensive use of Zeppelins as bombers and as scouts . Numerous bombing raids on Britain resulted in over 500 deaths. The defeat of Germany in 1918 temporarily slowed the airship business. Although DELAG established a scheduled daily service between Berlin , Munich , and Friedrichshafen in 1919, the airships built for that service eventually had to be surrendered under
11200-465: The January 1863 Emancipation Proclamation , many freed slaves joined the Union army . The war began to turn in the Union's favor following the 1863 Siege of Vicksburg and Battle of Gettysburg , and the Confederacy surrendered in 1865 after the Union's victory in the Battle of Appomattox Court House . The Reconstruction era followed the war. After the assassination of President Abraham Lincoln , Reconstruction Amendments were passed to protect
11360-413: The Kaiser, Z X (LZ 29), LZ 35 and the Schütte-Lanz airship SL 2 set off to bomb Paris : SL 2 was damaged by artillery fire while crossing the front and turned back but the two Zeppelins reached Paris and dropped 1,800 kg (4,000 lb) of bombs, killing only one and wounding eight. On the return journey Z X was damaged by anti-aircraft fire and was damaged beyond repair in
11520-564: The Kl 25. Capable of being fitted with fourteen different engine types, over 600 were sold, and licenses to manufacture them were issued in Great Britain and the United States. In January 1930 Mohamed Sidki flew from Berlin to Cairo, Egypt in a Klemm L25a. He landed in Cairo on 26 January, becoming a political hero by defying the British authorities who had denied him permission to land (he became known as The First Egyptian Eagle ). Sidki wrote
11680-618: The M class L 3, did not enter service until May 1914: in the meantime, Sachsen was hired from DELAG as a training ship. By the outbreak of war in August 1914, Zeppelin had started constructing the first M class airships, which had a length of 158 m (518 ft), with a volume of 22,500 cubic metres (794,500 cu ft) and a useful load of 9,100 kilograms (20,100 lb). Their three Maybach C-X engines produced 470 kilowatts (630 hp) each, and they could reach speeds of up to 84 kilometres per hour (52 mph). During World War I, Germany’s airships were operated separately by
11840-595: The Rocky Mountains, the Yellowstone Caldera , is the continent's largest volcanic feature. In 2021, the United States had 8% of global permanent meadows and pastures and 10% of cropland. With its large size and geographic variety, the United States includes most climate types. East of the 100th meridian , the climate ranges from humid continental in the north to humid subtropical in the south. The western Great Plains are semi-arid . Many mountainous areas of
12000-625: The U.S. has become a key ally of Ukraine ; it has also provided the country with significant military equipment and other support in response to Russia's 2022 invasion . The president is the commander-in-chief of the United States Armed Forces and appoints its leaders, the secretary of defense and the Joint Chiefs of Staff . The Department of Defense , which is headquartered at the Pentagon near Washington, D.C., administers five of
12160-661: The U.S. territories." Despite disparate systems of confinement, four main institutions dominate: federal prisons , state prisons , local jails, and juvenile correctional facilities . Federal prisons are run by the Federal Bureau of Prisons and hold people who have been convicted of federal crimes, including pretrial detainees. State prisons, run by the official department of correction of each state, hold sentenced people serving prison time (usually longer than one year) for felony offenses. Local jails are county or municipal facilities that incarcerate defendants prior to trial; they also hold those serving short sentences (typically under
12320-461: The United States and the peaceful transfer of power , respectively. The Louisiana Purchase of 1803 from France nearly doubled the territory of the United States. Lingering issues with Britain remained , leading to the War of 1812 , which was fought to a draw. Spain ceded Florida and its Gulf Coast territory in 1819. In the late 18th century, American settlers began to expand westward , many with
12480-752: The United States entered the Cold War, where geopolitical tensions between the U.S. and the Soviet Union led the two countries to dominate world affairs . The U.S. utilized the policy of containment to limit the USSR's sphere of influence, and prevailed in the Space Race , which culminated with the first crewed Moon landing in 1969. Domestically, the U.S. experienced economic growth , urbanization , and population growth following World War II . The civil rights movement emerged, with Martin Luther King Jr. becoming
12640-649: The United States has operated as a de facto two-party system , though the parties in that system have been different at different times. The two main national parties are presently the Democratic and the Republican . The former is perceived as relatively liberal in its political platform while the latter is perceived as relatively conservative . In the American federal system , sovereign powers are shared between two levels of elected government: national and state. People in
12800-572: The United States in 2001 by the pan-Islamist militant organization al-Qaeda led to the war on terror , and subsequent military interventions in Afghanistan and Iraq . The cultural impact of the attacks was profound and long-lasting. The U.S. housing bubble culminated in 2007 with the Great Recession , the largest economic contraction since the Great Depression. Coming to a head in
12960-631: The United States of America to Spain" to seek assistance in the Revolutionary War effort. The first known public usage is an anonymous essay published in the Williamsburg newspaper, The Virginia Gazette , on April 6, 1776. By June 1776, the "United States of America" appeared in the Articles of Confederation and the Declaration of Independence . The Second Continental Congress adopted
13120-591: The United States, slavery was abolished nationally . By 1900, the country had established itself as a great power , a status solidified after its involvement in World War I . After Japan 's attack on Pearl Harbor in December 1941, the U.S. entered World War II . Its aftermath left the U.S. and the Soviet Union as the world's two superpowers and led to the Cold War , during which both countries struggled for ideological dominance and international influence . Following
13280-532: The United States, despite the usage of "the Americas " as the totality of North and South America. "The States" is an established colloquial shortening of the name, used particularly from abroad; "stateside" is the corresponding adjective or adverb. The first inhabitants of North America migrated from Siberia across the Bering land bridge about 12,000 years ago; the Clovis culture , which appeared around 11,000 BC,
13440-605: The United States, except Iran , North Korea , and Bhutan . Though Taiwan does not have formal diplomatic relations with the U.S., it maintains close unofficial relations. The United States regularly supplies Taiwan with military equipment to deter potential Chinese aggression. Its geopolitical attention also turned to the Indo-Pacific when the United States joined the Quadrilateral Security Dialogue with Australia, India, and Japan. The United States has
13600-509: The United States. The American prison system is largely heterogenous, with thousands of relatively independent systems operating across federal, state, local, and tribal levels. In 2023, "these systems [held] almost 2 million people in 1,566 state prisons, 98 federal prisons, 3,116 local jails, 1,323 juvenile correctional facilities, 181 immigration detention facilities, and 80 Indian country jails, as well as in military prisons , civil commitment centers, state psychiatric hospitals, and prisons in
13760-489: The Zeppelin facility in Friedrichshafen. The combustible Blau gas was formulated to make its weight near that of air, so that its storage and consumption had little effect on the zeppelin's buoyancy . Blau gas was used on the first zeppelin voyage to America, starting in 1929. Count Ferdinand von Zeppelin 's interest in airship development began in 1874, when he was inspired by a lecture given by Heinrich von Stephan on
13920-420: The agreement of Kaiser Wilhelm II to a five-year program of expansion of German naval-airship strength, involving the building of two airship bases and constructing a fleet of ten airships. The first airship of the program, L 2, was ordered on 30 January. L 1 was lost on 9 September near Heligoland when caught in a storm while taking part in an exercise with the German fleet. 14 crew members drowned,
14080-510: The airship commanders commented on the improved defences of the city. L 15 began bombing over Charing Cross , the first bombs striking the Lyceum Theatre and the corner of Exeter and Wellington Streets, killing 17 and injuring 20. None of the other Zeppelins reached central London: bombs fell on Woolwich, Guildford , Tonbridge , Croydon , Hertford and an army camp near Folkestone. A total of 71 people were killed and 128 injured. This
14240-780: The airship was in reconnaissance over the North Sea and the Baltic , and the majority of airships manufactured were used by the Navy. Patrolling had priority over any other airship activity. During the war almost 1,000 missions were flown over the North Sea alone, compared with about 50 strategic bombing raids. The German Navy had some 15 Zeppelins in commission by the end of 1915 and was able to have two or more patrolling continuously at any one time. However, their operations were limited by weather conditions. On 16 February, L 3 and L 4 were lost owing to
14400-400: The airships, which were considerably more capable than contemporary light fixed-wing machines: they were almost as fast, could carry multiple machine guns, and had enormously greater bomb -load range and endurance. Contrary to expectation, it was not easy to ignite the hydrogen using standard bullets and shrapnel. The Allies only started to exploit the Zeppelin's great vulnerability to fire when
14560-521: The antiaircraft guns had their first success, causing L 12 to come down into the sea off Zeebrugge , and on 17–18 August L 10 became the first Navy airship to reach London. Mistaking the reservoirs of the Lea Valley for the Thames, it dropped its bombs on Walthamstow and Leytonstone. L 10 was destroyed a little over two weeks later: it was struck by lightning and caught fire off Cuxhaven , and
14720-625: The army in 1890 at the age of 52. Convinced of the potential importance of aviation, he started working on various designs in 1891, and had completed detailed designs by 1893. An official committee reviewed his plans in 1894, and he received a patent, granted on 31 August 1895, with Theodor Kober producing the technical drawings. Zeppelin's patent described a Lenkbares Luftfahrzeug mit mehreren hintereinander angeordneten Tragkörpern ("Steerable aircraft with several carrier bodies arranged one behind another"), an airship consisting of flexibly articulated rigid sections. The front section, containing
14880-464: The company's fortunes and, during the 1930s, the airships Graf Zeppelin , and the even larger LZ 129 Hindenburg operated regular transatlantic flights from Germany to North America and Brazil. The spire of the Empire State Building was originally designed to serve as a mooring mast for Zeppelins and other airships, although it was found that high winds made that impossible and the plan
15040-453: The contiguous United States are in the State of California, about 84 miles (135 km) apart. At an elevation of 20,310 feet (6,190.5 m), Alaska's Denali is the highest peak in the country and continent. Active volcanoes are common throughout Alaska's Alexander and Aleutian Islands , and Hawaii consists of volcanic islands. The supervolcano underlying Yellowstone National Park in
15200-549: The country's GDP. The U.S. has 42% of the world's nuclear weapons —the second-largest share after Russia. The United States has the third-largest combined armed forces in the world, behind the Chinese People's Liberation Army and Indian Armed Forces . The military operates about 800 bases and facilities abroad, and maintains deployments greater than 100 active duty personnel in 25 foreign countries. State defense forces (SDFs) are military units that operate under
15360-464: The country's territory would expand with the admission of new states , rather than the expansion of existing states. The U.S. Constitution was drafted at the 1787 Constitutional Convention to overcome the limitations of the Articles. It went into effect in 1789, creating a federal republic governed by three separate branches that together ensured a system of checks and balances . George Washington
15520-461: The crew and engines, was 117.35 m (385.0 ft) long with a gas capacity of 9,514 m (336,000 cu ft). The middle section was 16 metres (52 feet 6 inches) long with an intended useful load of 599 kg (1,321 lb) and the rear section 39.93 m (131.0 ft) long with an intended load of 1,996 kg (4,400 lb). Count Zeppelin's attempts to secure government funding for his project proved unsuccessful, but
15680-556: The damage was over one sixth of the total damage costs inflicted by bombing raids during the war. After three more raids were scattered by the weather, a five-Zeppelin raid was launched by the Navy on 13 October, the "Theatreland Raid." Arriving over the Norfolk coast at around 18:30, the Zeppelins encountered new ground defences installed since the September raid; these had no success, although
15840-699: The development of self-governance, and the First Great Awakening , a series of Christian revivals , fueled colonial interest in religious liberty . For a century, the American colonists had been providing their own troops and materiel in conflicts with indigenous peoples allied with Britain's colonial rivals , especially France, and the Americans had begun to develop a sense of self-defense and self-reliance separate from Britain. The French and Indian War (1754–1763) took on new significance for all North American colonists after Parliament under William Pitt
16000-551: The diversion of men and resources from the Western Front. Additionally, the fear of these attacks impacted industrial production to some extent. Early offensive operations by Army airships quickly revealed their extreme vulnerability to ground fire when flown at low altitudes, leading to the loss of several airships. Since no dedicated bombs had been developed at the time, these early raids dropped artillery shells instead. On 20 March 1915, temporarily forbidden from bombing London by
16160-406: The east coast and around the Thames estuary, but bombing accuracy was poor owing to the height at which the airships flew and navigation was problematic. The airships relied largely on dead reckoning , supplemented by a radio direction-finding system of limited accuracy. After blackouts became widespread, many bombs fell at random on uninhabited countryside. The first raid on England took place on
16320-401: The entire crew was killed. Three Army airships set off to bomb London on 7–8 September, of which two succeeded: SL 2 dropped bombs between Southwark and Woolwich : LZ 74 scattered 39 bombs over Cheshunt before heading on to London and dropping a single bomb on Fenchurch Street station . The Navy attempted to follow up the Army's success the following night. One Zeppelin targeted
16480-564: The environment for labor unions to begin to flourish . This period eventually ended with the advent of the Progressive Era , which was characterized by significant reforms. Pro-American elements in Hawaii overthrew the Hawaiian monarchy ; the islands were annexed in 1898. That same year, Puerto Rico , the Philippines , and Guam were ceded to the U.S. by Spain after the latter's defeat in
16640-412: The external viewing windows were often open during flight. The flight altitude was so low that no pressurization of the cabins was necessary. The Hindenburg did maintain a pressurized air-locked smoking room: no flame was allowed, but a single electric lighter was provided, which could not be removed from the room. Access to Zeppelins was achieved in a number of ways. The Graf Zeppelin ' s gondola
16800-558: The extreme cold, and one of the airships was destroyed in a forced landing at Seerappen . The plan was subsequently abandoned. In 1917 the German High Command made an attempt to use a Zeppelin to deliver supplies to Lettow-Vorbeck's forces in German East Africa . L 57 , a specially lengthened craft was to have flown the mission but was destroyed shortly after completion. A Zeppelin then under construction, L 59 ,
16960-527: The federal government often applied policies of Indian removal or assimilation . The Trail of Tears (1830–1850) was a U.S. government policy that forcibly removed and displaced most Native Americans living east of the Mississippi River to lands far to the west. These and earlier organized displacements prompted a long series of American Indian Wars west of the Mississippi. The Republic of Texas
17120-553: The first fatalities in a Zeppelin accident. Less than six weeks later, on 17 October, LZ 18 (L 2) caught fire during its acceptance trials, killing the entire crew. These accidents deprived the Navy of most of its experienced personnel: the head of the Admiralty Air Department was killed in the L ;1 and his successor died in the L 2. The Navy was left with three partially trained crews. The next Navy zeppelin,
17280-541: The first nuclear weapons and used them against the Japanese cities of Hiroshima and Nagasaki in August 1945, ending the war. The United States was one of the " Four Policemen " who met to plan the post-war world , alongside the United Kingdom , Soviet Union , and China . The U.S. emerged relatively unscathed from the war, with even greater economic power and international political influence . After World War II,
17440-571: The first of the new Q class airships were delivered. The Q class was an enlargement of the P ;class with improved ceiling and bomb-load. United States The United States of America ( USA ), commonly known as the United States ( U.S. ) or America , is a country primarily located in North America . It is a federal union of 50 states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to
17600-538: The first truly successful Zeppelin. This renewed the interest of the German military, but a condition of purchase of an airship was a 24-hour endurance trial. This was beyond the capabilities of LZ 3, leading Zeppelin to construct his fourth design, the LZ 4 , first flown on 20 June 1908. On 1 July it was flown over Switzerland to Zürich and then back to Lake Constance, covering 386 km (240 mi) and reaching an altitude of 795 m (2,608 ft). An attempt to complete
17760-514: The following night bombed the suburbs of Asnières and Versailles, with little effect. Airship operations in the Balkans started in the autumn of 1915, and an airship base was constructed at Szentandras . In November 1915, LZ 81 was used to fly diplomats to Sofia for negotiations with the Bulgarian government. This base was also used by LZ 85 to conduct two raids on Salonika in early 1916:
17920-513: The inflation of a single-pressure envelope to maintain their shape. The framework of most Zeppelins was made of duralumin , a combination of aluminium , copper , and two or three other metals, the exact composition of which was kept secret for years. Early Zeppelins used rubberized cotton for the gasbags, but most later craft used goldbeater's skin made from cattle gut. The first Zeppelins had long cylindrical hulls with tapered ends and complex multi-plane fins . During World War I, following
18080-463: The integration of Army National Guard units and personnel into the U.S. Army and (since 1947) the U.S. Air Force. There are about 18,000 U.S. police agencies from local to national level in the United States. Law in the United States is mainly enforced by local police departments and sheriff departments in their municipal or county jurisdictions. The state police departments have authority in their respective state , and federal agencies such as
18240-399: The lead of the rival firm Schütte-Lanz Luftschiffbau, almost all later airships changed to the more familiar streamlined shape with cruciform tail fins. Zeppelins were propelled by several internal combustion engines , mounted in gondolas or engine cars attached outside the structural framework. Some of these could provide reverse thrust for manoeuvring while mooring. Early models had
18400-477: The military draft (leading to the end of conscription in 1973) and wide opposition to U.S. intervention in Vietnam (with the U.S. totally withdrawing in 1975). A societal shift in the roles of women was significantly responsible for the large increase in female paid labor participation during the 1970s, and by 1985 the majority of American women aged 16 and older were employed. The late 1980s and early 1990s saw
18560-539: The mines' locations. In 1917, the Royal Navy began to take effective countermeasures against airship patrols over the North Sea. In April, the first Curtiss H.12 Large America long-range flying boats were delivered to RNAS Felixstowe , and in July 1917, the aircraft carrier HMS Furious entered service and launching platforms for aeroplanes were fitted to the forward turrets of some light cruisers. On 14 May, L 22
18720-615: The mission. Its replacement, LZ 86, was damaged by anti-aircraft fire during its second attack on Bucharest on 26 September and was damaged beyond repair in the resulting forced landing, and was replaced by LZ 97. At the instigation of the Kaiser a plan was made to bomb Saint Petersburg in December 1916. Two Navy zeppelins were transferred to Wainoden on the Courland Peninsula . A preliminary attempt to bomb Reval on 28 December ended in failure caused by operating problems due to
18880-612: The most attractive to the population are the most vulnerable. The U.S. is one of 17 megadiverse countries containing large numbers of endemic species : about 17,000 species of vascular plants occur in the contiguous United States and Alaska, and over 1,800 species of flowering plants are found in Hawaii, few of which occur on the mainland. The United States is home to 428 mammal species, 784 birds, 311 reptiles, 295 amphibians , and around 91,000 insect species. There are 63 national parks , and hundreds of other federally managed parks, forests, and wilderness areas , managed by
19040-642: The most violent, the California genocide of thousands of Native inhabitants, lasted into the early 1870s, just as additional western territories and states were created. During the colonial period, slavery had been legal in the American colonies , though the practice began to be significantly questioned during the American Revolution. States in the North enacted abolition laws , though support for slavery strengthened in Southern states , as inventions such as
19200-629: The night of 19–20 January 1915. Two Zeppelins, L 3 and L 4, intended to attack targets near the River Humber but, diverted by strong winds, eventually dropped their bombs on Great Yarmouth , Sheringham , King's Lynn and the surrounding villages, killing four and injuring 16. Material damage was estimated at £7,740. The Kaiser authorised the bombing of the London docks on 12 February 1915, but no raids on London took place until May. Two Navy raids failed due to bad weather on 14 and 15 April, and it
19360-653: The north and Mexico to the south, with the states of Alaska to the northwest and the archipelagic Hawaii in the Pacific Ocean . The United States also asserts sovereignty over five major island territories and various uninhabited islands . The country has the world's third-largest land area , largest exclusive economic zone , and third-largest population , exceeding 334 million. Its three largest metropolitan areas are New York , Los Angeles , and Chicago , and its three most populous states are California , Texas , and Florida . Paleo-Indians migrated across
19520-616: The outbreak of World War I in August 1914, 1588 flights had carried 10,197 fare-paying passengers. On 24 April 1912, the Imperial German Navy ordered its first Zeppelin—an enlarged version of the airships operated by DELAG—which received the naval designation Z 1 and entered Navy service in October 1912. On 18 January 1913 Admiral Alfred von Tirpitz , Secretary of State of the German Imperial Naval Office, obtained
19680-475: The passenger space had been relocated to the interior of the framework, passenger rooms were insulated from the exterior by the dining area, and forced-warm air could be circulated from the water that cooled the forward engines. The new design did prevent passengers from enjoying the views from the windows of their berths, which had been a major attraction on the Graf Zeppelin . On both the older and newer vessels,
19840-408: The policy of redlining later adopted by the federal Home Owners' Loan Corporation . An explosion of technological advancement accompanied by the exploitation of cheap immigrant labor led to rapid economic expansion during the late 19th and early 20th centuries , allowing the United States to outpace the economies of England, France, and Germany combined. This fostered the amassing of power by
20000-464: The previous unsuccessful attacks had been made by an aircraft operating from one of the Royal Navy's seaplane carriers; now realising that there was a new threat, Strasser ordered airships patrolling in the Terschilling area to maintain an altitude of at least 4,000 m (13,000 ft), considerably reducing their effectiveness. On 21 August, L 23, patrolling off the Danish coast, was spotted by
20160-553: The primary colonial grievances was a denial of their rights as Englishmen , particularly the right to representation in the British government that taxed them . To demonstrate their dissatisfaction and resolve, the First Continental Congress met in 1774 and passed the Continental Association , a colonial boycott of British goods that proved effective. The British attempt to then disarm the colonists resulted in
20320-410: The resulting forced landing. Three weeks later LZ 35 suffered a similar fate after bombing Poperinghe . Paris mounted a more effective defense against zeppelin raids than London. Zeppelins attacking Paris had to first fly over the system of forts between the front and the city, from which they were subjected to anti-aircraft fire with reduced risk of collateral damage . The French also maintained
20480-435: The retreating German fleet rather than observe British movements. In 1915, patrols were only carried out on 124 days and in other years the total was considerably less. They prevented British ships from approaching Germany, spotted when and where the British were laying mines and later aided in the destruction of those mines. Zeppelins would sometimes land on the sea next to a minesweeper, bring aboard an officer and show him
20640-515: The rights of African Americans . National infrastructure, including transcontinental telegraph and railroads , spurred growth in the American frontier . From 1865 through 1917 an unprecedented stream of immigrants arrived in the United States, including 24.4 million from Europe. Most came through the port of New York City , and New York City and other large cities on the East Coast became home to large Jewish , Irish , and Italian populations, while many Germans and Central Europeans moved to
20800-596: The rocky Great Basin and Chihuahua , Sonoran , and Mojave deserts. In the northwest corner of Arizona , carved by the Colorado River over millions of years, is the Grand Canyon , a steep-sided canyon and popular tourist destination known for its overwhelming visual size and intricate, colorful landscape. The Sierra Nevada and Cascade mountain ranges run close to the Pacific coast . The lowest and highest points in
20960-581: The sheds at Cologne as well as the Zeppelin works in Friedrichshafen were also attacked. These raids were followed by the Cuxhaven Raid on Christmas Day 1914, one of the first operations carried out by ship-launched aeroplanes. Airship raids on Great Britain were approved by the Kaiser on 7 January 1915, although he excluded London as a target and further demanded that no attacks be made on historic buildings. The raids were intended to target only military sites on
21120-516: The six service branches, which are made up of the U.S. Army , Marine Corps , Navy , Air Force , and Space Force . The Coast Guard is administered by the Department of Homeland Security in peacetime and can be transferred to the Department of the Navy in wartime. The United States spent $ 916 billion on its military in 2023, which is by far the largest amount of any country , making up 37% of global military spending and accounting for 3.4% of
21280-528: The sole authority of a state government. SDFs are authorized by state and federal law but are under the command of the state's governor . They are distinct from the state's National Guard units in that they cannot become federalized entities. A state's National Guard personnel, however, may be federalized under the National Defense Act Amendments of 1933 , which created the Guard and provides for
21440-543: The states are also represented by local elected governments , which are administrative divisions of the states. States are subdivided into counties or county equivalents , and further divided into municipalities . The District of Columbia is a federal district containing the U.S. capital, Washington, D.C. . The federal district is an administrative division of the federal government. Federally recognized tribes govern 326 Indian reservations . The United States has an established structure of foreign relations, and it has
21600-504: The structure and responsibilities of the national federal government and its relationship with the individual states. The U.S. Constitution is the world's oldest national constitution still in effect (from March 4, 1789). Composed of three branches, all headquartered in Washington, D.C., the federal government is the national government of the United States. It is regulated by a strong system of checks and balances . The three-branch system
21760-531: The subject of "World Postal Services and Air Travel" to outline the basic principle of his later craft in a diary entry dated 25 March 1874. It describes a large rigidly framed outer envelope containing several separate gasbags. He had previously encountered Union Army balloons in 1863 when he visited the United States as a military observer during the American Civil War . Count Zeppelin began to seriously pursue his project after his early retirement from
21920-641: The successor of the Kl 107-C named the Bölkow 207, the name of Klemm disappeared from the list of aircraft manufacturers. Klemm aircraft included: Zeppelin A Zeppelin is a type of rigid airship named after the German inventor Ferdinand von Zeppelin ( German pronunciation: [ˈt͡sɛpəliːn] ) who pioneered rigid airship development at the beginning of the 20th century. Zeppelin's notions were first formulated in 1874 and developed in detail in 1893. They were patented in Germany in 1895 and in
22080-497: The terms of the Treaty of Versailles , which also prohibited Germany from building large airships. An exception was made to allow the construction of one airship for the United States Navy , the order for which saved the company from extinction. In 1926, the restrictions on airship construction were lifted and, with the aid of donations from the public, work began on the construction of LZ 127 Graf Zeppelin . That revived
22240-453: The total damage was assessed at £18,596. Aware of the problems that the Germans were experiencing in navigation, this raid caused the government to issue a D notice prohibiting the press from reporting anything about raids that was not mentioned in official statements. Only one of the 15 defensive sorties managed to make visual contact with the enemy, and one of the pilots, Flt Lieut D. M. Barnes,
22400-529: The use of separate gasbags inside a rigid envelope. In 1898, Count Zeppelin founded the Gesellschaft zur Förderung der Luftschiffahrt (Society for the Promotion of Airship Flight), contributing more than half of its 800,000 mark share-capital himself. Responsibility for the detail design was given to Kober, whose place was later taken by Ludwig Dürr , and construction of the first airship began in 1899 in
22560-457: The weather, and as the airships returned to Evere (Brussels) they ran into a counter-raid by RNAS aircraft flying from Furnes , Belgium . LZ 38 was destroyed on the ground and LZ 37 was intercepted in the air by R. A. J. Warneford , who dropped six bombs on the airship, setting it on fire. All but one of the crew died. Warneford was awarded the Victoria Cross for his achievement. As
22720-565: The world's fourth-longest river system , runs predominantly north–south through the heart of the country. The flat and fertile prairie of the Great Plains stretches to the west, interrupted by a highland region in the southeast. The Rocky Mountains , west of the Great Plains, extend north to south across the country, peaking at over 14,000 feet (4,300 m) in Colorado . Farther west are
22880-449: The world's second-largest diplomatic corps as of 2024 . It is a permanent member of the United Nations Security Council , and home to the United Nations headquarters . The United States is a member of the G7 , G20 , and OECD intergovernmental organizations. Almost all countries have embassies and many have consulates (official representatives) in the country. Likewise, nearly all countries host formal diplomatic missions with
23040-444: The world's oldest surviving federation, and its presidential system of national government has been adopted, in whole or in part, by many newly independent states worldwide following their decolonization . It is a liberal representative democracy "in which majority rule is tempered by minority rights protected by law ". The Constitution of the United States serves as the country's supreme legal document , also establishing
23200-423: The world's tornadoes occur in the country , mainly in Tornado Alley . Overall, the United States receives more high-impact extreme weather incidents than any other country. Extreme weather became more frequent in the U.S. in the 21st century, with three times the number of reported heat waves as in the 1960s. In the American Southwest , droughts became more persistent and more severe. The regions considered as
23360-458: Was annexed in 1845, and the 1846 Oregon Treaty led to U.S. control of the present-day American Northwest . Victory in the Mexican–American War resulted in the 1848 Mexican Cession of California, Nevada, Utah, and much of present-day Colorado and the American Southwest . The California gold rush of 1848–1849 spurred a huge migration of white settlers to the Pacific coast, leading to even more confrontations with Native populations. One of
23520-441: Was abandoned. The Hindenburg disaster in 1937, along with political and economic developments in Germany in the lead-up to World War II , hastened the demise of airships. The principal feature of the Zeppelin's design was a fabric-covered, rigid metal framework of transverse rings and longitudinal girders enclosing a number of individual gasbags. This allowed the craft to be much larger than non-rigid airships , which relied on
23680-409: Was accessed while the vessel was on the ground, via gangways. The Hindenburg also had passenger gangways leading from the ground directly into its hull which could be withdrawn entirely, ground access to the gondola, and an exterior access hatch via its electrical room; this latter was intended for crew use only. On some long-distance zeppelins, engines were powered by a special Blau gas produced by
23840-703: Was adopted on July 4, 1776. The political values of the American Revolution included liberty , inalienable individual rights ; and the sovereignty of the people ; supporting republicanism and rejecting monarchy , aristocracy , and all hereditary political power; civic virtue ; and vilification of political corruption . The Founding Fathers of the United States , who included Washington, Jefferson, John Adams , Benjamin Franklin , Alexander Hamilton , John Jay , James Madison , Thomas Paine , and many others, were inspired by Greco-Roman , Renaissance , and Enlightenment philosophies and ideas. The Articles of Confederation were ratified in 1781 and established
24000-444: Was completed in May 1909) and designated them Z I and Z II respectively. Z II was wrecked in a gale in April 1910, while Z I flew until 1913, when it was decommissioned and replaced by LZ 15, designated ersatz Z I. First flown on 16 January 1913, it was wrecked on 19 March of the same year. In April 1913 its newly built sister-ship LZ 15 (Z IV) accidentally intruded into French airspace owing to
24160-575: Was decided to delay further attempts until the more capable P class Zeppelins were in service. The Army received the first of these, LZ 38, and Erich Linnarz commanded it on a raid over Ipswich on 29–30 April and another, attacking Southend on 9–10 May. LZ 38 also attacked Dover and Ramsgate on 16–17 May, before returning to bomb Southend on 26–27 May. These four raids killed six people and injured six, causing property damage estimated at £16,898. Twice Royal Naval Air Service (RNAS) aircraft tried to intercept LZ 38 but on both occasions it
24320-458: Was driven by two 15 horsepower (11 kW) Daimler engines each driving a pair of propellers mounted either side of the envelope via bevel gears and a driveshaft, and was controlled in pitch by moving a weight between its two nacelles . The first flight took place over Lake Constance on 2 July 1900. Damaged during landing, it was repaired and modified and proved its potential in two subsequent flights made on 17 and 24 October 1900, bettering
24480-419: Was either able to outclimb the aircraft or was already at too great an altitude for the aircraft to intercept. On 31 May Linnarz commanded LZ 38 on the first raid against London. In total some 120 bombs were dropped on a line stretching from Stoke Newington south to Stepney and then north toward Leytonstone . Seven people were killed and 35 injured. 41 fires were started, burning out seven buildings and
24640-404: Was elected the country's first president under the Constitution, and the Bill of Rights was adopted in 1791 to allay skeptics' concerns about the power of the more centralized government. His resignation as commander-in-chief after the Revolutionary War and his later refusal to run for a third term as the country's first president established a precedent for the supremacy of civil authority in
24800-404: Was killed on attempting to land. The first naval attempt on London took place on 4 June: strong winds caused the commander of L 9 to misjudge his position, and the bombs were dropped on Gravesend . L 9 was also diverted by the weather on 6–7 June, attacking Hull instead of London and causing considerable damage. On the same night an Army raid of three Zeppelins also failed because of
24960-408: Was powered by a 20 hp (15 kW) Daimler engine designed by Ferdinand Porsche . In 1928 Friedrich Karl von Koenig-Warthausen made a solo flight to Moscow in a Klemm L.20, then decided to keep on going, circumnavigating the world and earning himself the Hindenburg Cup , the highest German honour for aeronautical achievement. From the L.20 was developed the Klemm L.25, later redesignated
25120-424: Was shot down near Terschelling Bank by an H.12 flown by Lt. Galpin and Sub-Lt. Leckie, which had been alerted following interception of its radio traffic. Two abortive interceptions were made by Galpin and Leckie on 24 May and 5 June. On 14 June, L 43 was brought down by an H.12 flown by Sub Lts. Hobbs and Dickie. On the same day Galpin and Leckie intercepted and attacked L 46. The Germans had believed that
25280-417: Was the last raid of 1915, as bad weather coincided with the new moon in both November and December 1915 and continued into January 1916. Although these raids had no significant military impact, the psychological effect was considerable. The writer D. H. Lawrence described one raid in a letter to Lady Ottoline Morrell : Then we saw the Zeppelin above us, just ahead, amid a gleaming of clouds: high up, like
25440-399: Was then modified for the mission: it set off from Yambol on 21 November 1917 and nearly reached its destination, but was ordered to return by radio. Its journey covered 6,400 km (4,000 mi) and lasted 95 hours. It was then used for reconnaissance and bombing missions in the eastern Mediterranean. It flew one bombing mission against Naples on 10–11 March 1918. A planned attack on Suez
25600-461: Was turned back by high winds, and on 7 April 1918 it was on a mission to bomb the British naval base at Malta when it caught fire over the Straits of Otranto , with the loss of all its crew. On 5 January 1918, a fire at Ahlhorn destroyed four of the specialised double sheds along with four Zeppelins and one Schütte-Lanz. In July 1918, the Tondern raid conducted by the RAF and Royal Navy, destroyed two Zeppelins in their sheds. The main use of
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