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135-463: The main structure of Salk Hall is the former city owned Pittsburgh Municipal Hospital for Contagious Diseases constructed in 1941 on land the university had given to the city. It was designed by Richard Irving and Theodore Eicholz. The hospital was built as a project by President Roosevelt's Public Works Administration . The 225-bed hospital was originally part of the Medical Center associated with

270-527: A C grade, and improving from the 46th to 54th most polluted by ozone smog. According to daily ozone air quality data provided by the EPA, from 2021 to 2024, Pittsburgh had good or moderate air quality most of the time. Then-Allegheny County executive Rich Fitzgerald said in December 2023 that they’d seen an "80 % drop in hazardous air pollutants" and that they made EPA attainment at all eight county air monitors for

405-708: A bill in Congress to admit Ohio to the Union retroactive to March 1, 1803, the date on which the Ohio General Assembly first convened. At a special session at the old state capital in Chillicothe , the Ohio state legislature approved a new petition for statehood, which was delivered to Washington, D.C. , on horseback, and approved that August. Ohio has had three capital cities: Chillicothe, Zanesville , and Columbus . Chillicothe

540-747: A conclusion. In 1774, Britain passed the Quebec Act , which formally annexed Ohio and other western lands to the Province of Quebec in order to provide a civil government and to centralize British administration of the Montreal -based fur trade. The prohibition of settlement west of the Appalachians remained, contributing to the American Revolution. By the start of the American Revolutionary War ,

675-658: A decisive victor. In the Treaty of Paris in 1783, Britain ceded all claims to Ohio Country to the new United States after its victory in the American Revolutionary War . The United States created the Northwest Territory under the Northwest Ordinance of 1787. Slavery was not permitted in the new territory. Settlement began with the founding of Marietta by the Ohio Company of Associates , which had been formed by

810-534: A decrease in city population, even as the metropolitan area population increased again. During the late 2000s recession , Pittsburgh was economically strong, adding jobs when most cities were losing them. It was one of the few cities in the United States to see housing property values rise. Between 2006 and 2011, the Pittsburgh metropolitan statistical area (MSA) experienced over 10% appreciation in housing prices,

945-594: A free state after the Revolution, enslaved African Americans sought freedom here through escape as refugees from the South, or occasionally fleeing from travelers they were serving who stayed in the city. There were active stations of the Underground Railroad in the city, and numerous refugees were documented as getting help from station agents and African-American workers in city hotels. The Drennen Slave Girl walked out of

1080-712: A group of American Revolutionary War veterans. Following the Ohio Company, the Miami Company (also referred to as the " Symmes Purchase ") claimed the southwestern section, and the Connecticut Land Company surveyed and settled the Connecticut Western Reserve in present-day Northeast Ohio . Territorial surveyors from Fort Steuben began surveying an area of eastern Ohio called the Seven Ranges at about

1215-666: A growing residential segment. Most significantly, the Pittsburgh Cultural Trust is embarking on RiverParc, a four-block mixed-use "green" community, featuring 700 residential units and multiple towers of between 20 and 30 stories. The Firstside portion of Downtown borders the Monongahela River, the historic Mon Wharf and hosts the distinctive PPG Place Gothic-style glass skyscraper complex. New condo towers have been constructed and historic office towers are converted to residential use, increasing 24-hour residents. Downtown

1350-429: A large decline in union membership: 17.4% of Ohioan workers were union members in 2000, while 12.8% were union members in 2022. In the wake of these economic changes, Ohio's state government has looked to promoting new industries to offset manufacturing losses, such as the production of solar energy and electric vehicles . One major program the state government launched was the "Third Frontier" program, created during

1485-478: A national model of success. Ohio's economy was also heavily afflicted by the Great Recession , as the state's unemployment rate rose from 5.6% in the first two months of 2008 up to a peak of 11.1% in December 2009 and January 2010. It took until August 2014 for the unemployment rate to return to 5.6%. From December 2007 to September 2010, Ohio lost 376,500 jobs. In 2009, Ohio had 89,053 foreclosures filings,

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1620-575: A population of 2.457 million residents and is the largest metro area in both the Ohio Valley and Appalachia , the second-largest in Pennsylvania , and the 26th-largest in the U.S. Pittsburgh is the principal city of the greater Pittsburgh–Weirton–Steubenville combined statistical area which includes parts of Ohio and West Virginia . Pittsburgh is known as "the Steel City" for its dominant role in

1755-653: A potential market for Ohio machinery exports. In July 1979, Rhodes led a State of Ohio Trade Mission to China. The trip resulted in developing economic ties, a sister state-province relationship with Hubei province , long-running Chinese exhibitions at the Ohio State Fair , and major academic exchanges between Ohio State University and Wuhan University . Beginning in the 1980s, the state entered into international economic and resource cooperation treaties and organizations with other Midwestern states, as well as New York , Pennsylvania , Ontario , and Quebec , including

1890-533: A quarter of neighborhood names make reference to "hills," "heights," or similar features. The steps of Pittsburgh consist of 800 sets of outdoor public stairways with 44,645 treads and 24,090 vertical feet. They include hundreds of streets composed entirely of stairs, and many other steep streets with stairs for sidewalks. Many provide vistas of the Pittsburgh area while attracting hikers and fitness walkers. Bike and walking trails have been built to border many of

2025-649: A riot in downtown Kent and the burning of an ROTC building. The main cause of the protests was the United States' invasion of Cambodia during the Vietnam War . Ohio was an important state in the developing ties between the United States and the People's Republic of China in the late 1970s and early 1980s. Relations between the two countries normalized in 1979, during the second term of Ohio governor Jim Rhodes . Rhodes sought to encourage economic ties, viewing China as

2160-403: A then-record for the state. The median household income dropped 7% from 2006–07 to 2008–09, and the poverty rate ballooned to 13.5% by 2009. By 2015, Ohio gross domestic product was $ 608.1 billion, the seventh-largest economy among the 50 states . In 2015, Ohio's total GDP accounted for 3.4% of U.S. GDP and 0.8% of world GDP. Politically, Ohio has been long regarded as a swing state , but

2295-507: A variety of original dental artifacts, including a c. 1910 dental chair, and x-ray machine and instrument cabinet from the 1920s. Also contained in Salk Hall is the Elmer H. Grimm Sr. Pharmacy Museum, which opened in the fall of 1996. Located on the fourth floor, the museum holds pharmacy memorabilia such as drug products, equipment, and sundry products dating back to the early 20th century. Among

2430-570: Is 39.61 inches (1,006 mm) and precipitation is greatest in May while least in October; annual precipitation has historically ranged from 22.65 in (575 mm) in 1930 to 57.83 in (1,469 mm) in 2018. On average, December and January have the greatest number of precipitation days. Snowfall averages 44.1 inches (112 cm) per season, but has historically ranged from 8.8 in (22 cm) in 1918–19 to 80 in (200 cm) in 1950–51. There

2565-404: Is additionally where Jehovah's Witnesses traces its earliest origins, and was the host of the 2009 G20 Pittsburgh summit . Pittsburgh was named in 1758, by General John Forbes , in honor of British statesman William Pitt, 1st Earl of Chatham . As Forbes was a Scotsman , he probably pronounced the name / ˈ p ɪ t s b ər ə / PITS -bər-ə (similar to Edinburgh ). Pittsburgh

2700-483: Is an average of 59 clear days and 103 partly cloudy days per year, while 203 days are cloudy. In terms of annual percent-average possible sunshine received, Pittsburgh (45%) is similar to Seattle (49%). The American Lung Association's (ALA) 2023 "State of the Air" report (which included data from 2019 to 2021) showed air quality in Pittsburgh improving. The city received a passing grade for ozone pollution, going from an F to

2835-574: Is composed of the executive branch, led by the governor ; the legislative branch, consisting of the bicameral Ohio General Assembly ; and the judicial branch, led by the state Supreme Court . Ohio occupies 15 seats in the United States House of Representatives , the seventh-largest delegation. Seven presidents of the United States have come from Ohio , earning it the moniker "the Mother of Presidents". Archeological evidence of spear points of both

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2970-568: Is defined by the Ohio River . Ohio's neighbors are Pennsylvania to the east, Michigan to the northwest, Lake Erie to the north, Indiana to the west, Kentucky on the south, and West Virginia on the southeast. Ohio's borders were defined by metes and bounds in the Enabling Act of 1802 as follows: Bounded on the east by the Pennsylvania line, on the south by the Ohio River, to the mouth of

3105-417: Is fully aquatic and breathes almost entirely through its skin. Due to this, it is only found in pristine, cool, clear, fast flowing streams and rivers. It is highly threatened by habitat loss , water pollution , and sedimentation due to logging and other human activities. The climate of Ohio is a humid continental climate ( Köppen climate classification Dfa/Dfb ) throughout most of the state, except in

3240-454: Is home to large medical providers, including the University of Pittsburgh Medical Center , Allegheny Health Network , and 68 colleges and universities , including research and development leaders Carnegie Mellon University and the University of Pittsburgh . The area has served as the federal agency headquarters for cyber defense , software engineering , robotics , energy research , and

3375-413: Is home to the University of Pittsburgh , Carnegie Mellon University , Carlow University , Chatham University , The Carnegie Institute's Museums of Art and Natural History , Phipps Conservatory , and Soldiers and Sailors Memorial Hall . It is also home to many parks and public spaces including Mellon Park , Westinghouse Park , Schenley Park , Frick Park , The Frick Pittsburgh , Bakery Square , and

3510-562: Is known as the Tornado Alley . Severe lake effect snowstorms are also not uncommon on the southeast shore of Lake Erie , which is located in an area designated as the Snowbelt . Although predominantly not in a subtropical climate, some warmer-climate flora and fauna do reach well into Ohio. For instance, some trees with more southern ranges, such as the blackjack oak , Quercus marilandica , are found at their northernmost in Ohio just north of

3645-505: Is now known as Washington's Landing, formerly Herr's Island , in what is now the Lawrenceville neighborhood. The first known European to enter the region was the French explorer Robert de La Salle from Quebec during his 1669 expedition down the Ohio River . European pioneers, primarily Dutch, followed in the early 18th century. Michael Bezallion was the first to describe the forks of

3780-672: Is primarily composed of residential neighborhoods and is noteworthy for its well-constructed and architecturally interesting homes. Many buildings date from the 19th century and are constructed of brick or stone and adorned with decorative woodwork, ceramic tile, slate roofs and stained glass. The North Side is also home to attractions such as Acrisure Stadium , PNC Park , Kamin Science Center , National Aviary , Andy Warhol Museum , Mattress Factory art museum, Children's Museum of Pittsburgh , Randyland , Penn Brewery , Allegheny Observatory , and Allegheny General Hospital . The South Side

3915-564: Is referred to as "the Point." The city extends east to include the Oakland and Shadyside sections, which are home to the University of Pittsburgh , Carnegie Mellon University , Chatham University , Carnegie Museum and Library , and many other educational, medical, and cultural institutions. The southern, western, and northern areas of the city are primarily residential. Many Pittsburgh neighborhoods are steeply sloped with two-lane roads. More than

4050-506: Is served by the Port Authority 's light rail system and multiple bridges leading north and south. It is also home to Point Park University and Duquesne University which borders Uptown . The North Side is home to various neighborhoods in transition. The area was once known as Allegheny City and operated as its own independent city until 1907, when it was merged with Pittsburgh despite great protest from its citizens. The North Side

4185-569: Is the second-most populous city in Pennsylvania , after Philadelphia , and the 68th-most populous city in the U.S., with a population of 302,971 as of the 2020 census . The city is located in southwestern Pennsylvania at the confluence of the Allegheny River and the Monongahela River , which combine to form the Ohio River . It anchors the Pittsburgh metropolitan area , which had

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4320-597: Is water. The 80th meridian west passes directly through the city's downtown. The city is on the Allegheny Plateau , within the ecoregion of the Western Allegheny Plateau . The Downtown area (also known as the Golden Triangle) sits where the Allegheny River flows from the northeast and the Monongahela River from the southeast to form the Ohio River . The convergence is at Point State Park and

4455-567: The Allegheny Mountains . The Great Fire of Pittsburgh destroyed over a thousand buildings in 1845. The city rebuilt with the aid of Irish immigrants who came to escape the Great Famine . By 1857, Pittsburgh's 1,000 factories were consuming 22 million coal bushels yearly. Coal mining and iron manufacturing attracted waves of European immigrants to the area, with the most coming from Germany . Because Pennsylvania had been established as

4590-711: The Appalachian Regional Development Act , an attempt to "address the persistent poverty and growing economic despair of the Appalachian Region". It defines 29 Ohio counties as part of Appalachia. While 1/3 of Ohio's land mass is part of the federally defined Appalachian region, only 12.8% of Ohioans live there (1.476 million people.) Significant Ohio rivers include the Cuyahoga River , Great Miami River , Maumee River , Muskingum River , and Scioto River . The rivers in northern Ohio drain into

4725-653: The Charles Young Buffalo Soldiers National Monument and Perry's Victory and International Peace Memorial . Ohio has wide variety of unique animal species. Rare and endangered species include the Eastern Hellbender , which is found in the Southeastern Appalachian region of Ohio and is classified as state endangered. The Eastern Hellbender is the 3rd largest amphibian in the world, and can grow up to 27 inches in length. It

4860-795: The Dayton Triangles beat the Columbus Panhandles 14–0 in Dayton. Canton was enshrined as the home of the Pro Football Hall of Fame in 1963. During the 1930s, the Great Depression struck the state hard. By 1933, more than 40% of factory workers and 67% of construction workers were unemployed in Ohio. Approximately 50% of industrial workers in Cleveland and 80% in Toledo became unemployed, with

4995-753: The Edgar Thomson Steel Works in North Braddock, Pennsylvania , which evolved into the Carnegie Steel Company . He adopted the Bessemer process to increase production. Manufacturing was key to growth of Pittsburgh and the surrounding region. Railroad lines were built into the city along both rivers, increasing transportation access to important markets. In 1901, J. P. Morgan and attorney Elbert H. Gary merged Carnegie Steel Company and several other companies into U.S. Steel . By 1910, Pittsburgh

5130-622: The Enabling Act of 1802 . In regard to the Leni Lenape natives, Congress decided that 10,000 acres on the Muskingum River in the present state of Ohio would "be set apart and the property thereof be vested in the Moravian Brethren  ... or a society of the said Brethren for civilizing the Indians and promoting Christianity". Rufus Putnam served in important military capacities in both

5265-601: The French and Indian War and the American Revolutionary War . He was one of the most highly respected men in the early years of the United States. In 1776, Putnam created a method of building portable fortifications, which enabled the Continental Army to drive the British from Boston. George Washington was so impressed that he made Putnam his chief engineer. After the war, Putnam and Manasseh Cutler were instrumental in creating

5400-498: The Great Black Swamp . This glaciated region in the northwest and central state is bordered to the east and southeast first by a belt known as the glaciated Allegheny Plateau , and then by another belt known as the unglaciated Allegheny Plateau . Most of Ohio is of low relief, but the unglaciated Allegheny Plateau features rugged hills and forests . Ohio's rugged southeastern quadrant, stretching in an outward bow-like arc along

5535-529: The Great Dayton Flood , the entire Miami River watershed flooded, including the downtown business district of Dayton . As a result, the Miami Conservancy District was created as the first major floodplain engineering project in Ohio and the United States. The highest recorded temperature was 113  °F (45  °C ), near Gallipolis on July 21, 1934. The lowest recorded temperature

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5670-815: The Great Lakes Charter , Great Lakes Compact , and the Council of Great Lakes Governors . Ohio's economy has undergone significant change in the 21st century, as the trend of deindustrialization has greatly impacted the American Midwest and the Rust Belt . Manufacturing in the Midwest experienced a stark decline during the early 21st century, a trend that greatly impacted Ohio. From 1990 to 2019, it lost over 300,000 manufacturing jobs, but added over 1,000,000 non-manufacturing jobs. Coinciding with this decline, Ohio has seen

5805-522: The Great Miami River , on the west by the line drawn due north from the mouth of the Great Miami aforesaid, and on the north by an east and west line drawn through the southerly extreme of Lake Michigan , running east after intersecting the due north line aforesaid, from the mouth of the Great Miami until it shall intersect Lake Erie or the territorial line, and thence with the same through Lake Erie to

5940-399: The Iroquois Confederacy , based in New York, had maintained control of much of the Ohio Valley as hunting grounds by right of conquest after defeating other tribes. By the terms of the 1768 Treaty of Fort Stanwix , the Penns were allowed to purchase the modern region from the Iroquois . A 1769 survey referenced the future city as the "Manor of Pittsburgh". Both the Colony of Virginia and

6075-435: The Köppen climate classification , Pittsburgh falls within either a hot-summer humid continental climate ( Dfa ) if the 0 °C (32 °F) isotherm is used or a humid subtropical climate ( Cfa ) if the −3 °C (27 °F) isotherm is used. Summers are hot and winters are moderately cold with wide variations in temperature. Despite this, it has one of the most pleasant summer climates between medium and large cities in

6210-408: The Northwest Ordinance , which opened up the Northwest Territory for settlement. This land was used to serve as compensation for what was owed to Revolutionary War veterans. Putnam organized and led the Ohio Company of Associates , who settled at Marietta, Ohio , where they built a large fort, Campus Martius . He set substantial amounts of land aside for schools. In 1798, he created the plan for

6345-405: The Pittsburgh Post-Gazette was started, and in 1787, the Pittsburgh Academy was chartered. Unrest during the Whiskey Rebellion of 1794 resulted in federal troops being sent to the area. By 1797, glass manufacture began, while the population grew to around 1,400. Settlers arrived after crossing the Appalachian Mountains or through the Great Lakes . Fort Pitt (now Pittsburgh) at the source of

6480-405: The Pittsburgh Zoo and PPG Aquarium. The neighborhoods of Shadyside and Squirrel Hill are large, wealthy neighborhoods with some apartments and condos, and pedestrian-oriented shopping/business districts. Squirrel Hill is also known as the hub of Jewish life in Pittsburgh, home to approximately 20 synagogues. Oakland , heavily populated by undergraduate and graduate students, is home to most of

6615-415: The Province of Pennsylvania claimed the region under their colonial charters until 1780, when they agreed under a federal initiative to extend the Mason–Dixon line westward, placing Pittsburgh in Pennsylvania. On March 8, 1771, Bedford County, Pennsylvania was created to govern the frontier. On April 16, 1771, the city's first civilian local government was created as Pitt Township . William Teagarden

6750-410: The Western Confederacy , was forced to cede extensive territory, including much of present-day Ohio, in the Treaty of Greenville in 1795. Under the Northwest Ordinance , areas could be defined and admitted as states once their population reached 60,000. Although Ohio's population was only 45,000 in December 1801, Congress determined that it was growing rapidly enough and accelerated the process via

6885-417: The Whittlesey Culture and the Monongahela Culture . All three disappeared in the 17th century. Their origins are unknown. The Shawnees may have absorbed the Fort Ancient people. It is also possible that the Monongahela held no land in Ohio during the Colonial Era. The Mississippian culture was close to and traded extensively with the Fort Ancient people. Indians in the Ohio Valley were greatly affected by

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7020-518: The first American to orbit the Earth , and Neil Armstrong becoming the first human to walk on the Moon . In 1967, Carl Stokes was elected mayor of Cleveland and became the first African American mayor of one of the nation's 10 most populous cities. In 1970, an Ohio Army National Guard unit fired at students during an antiwar protest at Kent State University , killing four and wounding nine. The Guard had been called onto campus after several protests in and around campus became violent, including

7155-485: The fur trade . Some of the Indigenous nations that historically inhabited Ohio include the Iroquoian, the Algonquian, and the Siouan. Ohio country was also the site of Indian massacres, such as the Yellow Creek massacre and the Gnadenhutten massacre . After the War of 1812 , when Natives suffered serious losses such as at Tippecanoe , most Native tribes either left Ohio or had to live on only limited reservations. By 1842, all remaining Natives were forced out of

7290-415: The history of the U.S. steel industry . It developed as a vital link of the Atlantic coast and Midwest , as the mineral-rich Allegheny Mountains led to the region being contested by the French and British Empires, Virginians , Whiskey Rebels , and Civil War raiders . For part of the 20th century, Pittsburgh was behind only New York City and Chicago in corporate headquarters employment; it had

7425-445: The nuclear navy . In the private sector, Pittsburgh-based PNC is the nation's fifth-largest bank, and the city is home to ten Fortune 500 companies and seven of the largest 300 U.S. law firms. Other corporations that have regional headquarters and offices have helped Pittsburgh become the sixth-best area for U.S. job growth. Pittsburgh is sometimes called the "City of Bridges" for its 446 bridges . Its rich industrial history left

7560-417: The "Buckeye State" after its Ohio buckeye trees , and Ohioans are also known as "Buckeyes". Ohio derives its name from the Ohio River that forms its southern border, which, in turn, originated from the Seneca word ohiːyo' , meaning "good river", "great river", or "large creek". The state was home to several ancient indigenous civilizations, with humans present as early as 10,000 BCE. It arose from

7695-415: The 1850 Fugitive Slave Act , as it required cooperation from law enforcement even in free states and increased penalties. From 1850 to 1860, the black population in Allegheny County dropped from 3,431 to 2,725 as people headed to more safety in Canada. The American Civil War boosted the city's economy with increased iron and armament demand by the Union. Andrew Carnegie began steel production in 1875 at

7830-401: The Adena culture is the Great Serpent Mound , located in Adams County, Ohio . Around 100 BC, the Adena evolved into the Hopewell people, who were also mound builders. Their complex, large and technologically sophisticated earthworks can be found in modern-day Marietta , Newark , and Circleville . They were also a prolific trading society, their trading network spanning a third of

7965-517: The American Revolution, Britain thinly exercised sovereignty over Ohio Country by lackadaisical garrisoning of the French forts. Just beyond Ohio Country was the great Miami capital of Kekionga , which became the center of British trade and influence in Ohio Country and throughout the future Northwest Territory . By the Royal Proclamation of 1763 , British lands west of Appalachia were forbidden to settlement by colonists. The Treaty of Fort Stanwix in 1768 explicitly reserved lands north and west of

8100-399: The Central, North Side/North Hills, South Side/South Hills, East End, and West End. Downtown Pittsburgh has 30 skyscrapers, nine of which top 500 feet (150 m). The U.S. Steel Tower is the tallest, at 841 ft (256 m). The Cultural District consists of a 14-block area of downtown along the Allegheny River . This district contains many theaters and arts venues and is home to

8235-425: The East to migrate west against their will, including all remaining tribes in Ohio. In 1835, Ohio fought with the Michigan Territory in the Toledo War , a mostly bloodless boundary war over the Toledo Strip. Only one person was injured in the conflict. Congress intervened, making Michigan 's admittance as a state conditional on ending the conflict. In exchange for giving up its claim to the Toledo Strip, Michigan

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8370-414: The Elder , while the settlement was named "Pittsborough". During Pontiac's War , a loose confederation of Native American tribes laid siege to Fort Pitt in 1763; the siege was eventually lifted after Colonel Henry Bouquet defeated a portion of the besieging force at the Battle of Bushy Run . Bouquet strengthened the defenses of Fort Pitt the next year. During this period, the powerful nations of

8505-507: The Folsom and Clovis types indicate that the Ohio Valley was inhabited by nomadic people as early as 13,000 BC. These early nomads disappeared from Ohio by 1,000 BC. Between 1,000 and 800 BC, the sedentary Adena culture emerged. The Adena established "semi-permanent" villages because they domesticated plants, including sunflowers, and "grew squash and possibly corn"; with hunting and gathering, this cultivation supported more settled, complex villages. The most notable remnant of

8640-424: The Lenape Indian capital of Coshocton ; a detachment of one hundred of George Rogers Clark 's troops that were ambushed near the Ohio River by Indians led by Joseph Brant in the same year; a British and Native American attack on the U.S.' Fort Laurens ; and the 1782 detainment and murder of 96 Moravian Lenape pacifists by Pennsylvania militiamen in the Gnadenhutten massacre . The western theatre never had

8775-428: The Monongahela House in 1850, apparently to freedom. The Merchant's Hotel was also a place where African-American workers would advise slaves the state was free and aid them in getting to nearby stations of the Underground Railroad. Sometimes refugee slaves from the South stayed in Pittsburgh, but other times they continued North, including into Canada. Many slaves left the city and county for Canada after Congress passed

8910-399: The North American front of the Seven Years' War , began with the future Pittsburgh as its center. British General Edward Braddock was dispatched with Major George Washington as his aide to take Fort Duquesne. The British and colonial force were defeated at Braddock's Field . General John Forbes finally took the forks in 1758. He began construction on Fort Pitt , named after William Pitt

9045-432: The North Side, and the Golden Triangle are characterized by more density of housing, walking neighborhoods, and a more diverse, urban feel. Pittsburgh falls within the borders of the Northeastern United States as defined by multiple US Government agencies. Pittsburgh is the principal city of the Pittsburgh Combined Statistical Area , a combined statistical area defined by the U.S. Census Bureau . Pittsburgh falls within

9180-461: The Northeast to the Midwest, much cargo and business traffic passes through its borders along its well-developed highways. Ohio has the nation's 10th-largest highway network and is within a one-day drive of 50% of North America's population and 70% of North America's manufacturing capacity. To the north, Ohio has 312 miles (502 km) of coastline with Lake Erie, which allows for numerous cargo ports such as Cleveland and Toledo. Ohio's southern border

9315-449: The Ohio River became the main base for settlers moving into the Northwest Territory . The federal government recognizes Pittsburgh as the starting point for the Lewis and Clark Expedition . Preparations began in Pittsburgh in 1803 when Meriwether Lewis purchased a keelboat that would later be used to ascend the Missouri River . The War of 1812 cut off the supply of British goods, stimulating American industry. By 1815, Pittsburgh

9450-402: The Ohio River from the West Virginia Panhandle to the outskirts of Cincinnati, forms a distinct socioeconomic unit. Geologically similar to parts of West Virginia and southwestern Pennsylvania, this area's coal mining legacy, dependence on small pockets of old manufacturing establishments, and distinctive regional dialect set this section off from the rest of the state. In 1965, Congress passed

9585-449: The Ohio River were attacked and ransacked in Morgan's Raid , starting in Harrison in the west and culminating in the Battle of Salineville near West Point in the far east. While this raid was overall insignificant to the Confederacy, it aroused fear among people in Ohio and Indiana as it was the furthest advancement of troops from the South in the war. Almost 35,000 Ohioans died in the conflict, and 30,000 were physically wounded. By

9720-536: The Ohio River. Also evidencing this climatic transition from a subtropical to a continental climate, several plants such as the Southern magnolia ( Magnolia grandiflora ) , Albizia julibrissin (mimosa), Crape Myrtle , and even the occasional Needle Palm are hardy landscape materials regularly used as street, yard, and garden plantings in the Bluegrass region of Ohio; but these same plants will simply not thrive in much of

9855-521: The Ohio as Native lands. British military occupation in the region contributed to the outbreak of Pontiac's War in 1763. Ohio tribes participated in the war until an armed expedition in Ohio led by Brigadier General Henry Bouquet brought about a truce. Another colonial military expedition into the Ohio Country in 1774 brought Lord Dunmore's War , kicked off by the Yellow Creek massacre in Ohio, to

9990-504: The Ohio headwaters was long inhabited by the Shawnee and several other settled groups of Native Americans . Shannopin's Town was an 18th-century Lenape (Delaware) town located roughly from where Penn Avenue is today, below the mouth of Two Mile Run, from 30th Street to 39th Street. According to George Croghan , the town was situated on the south bank of the Allegheny, nearly opposite what

10125-452: The Ohio in a 1717 manuscript, and later that year European fur traders established area posts and settlements. In 1749, French soldiers from Quebec launched an expedition to the forks to unite Canada with French Louisiana via the rivers. During 1753–1754, the British hastily built Fort Prince George before a larger French force drove them off. The French built Fort Duquesne based on LaSalle's 1669 claims. The French and Indian War ,

10260-424: The Pennsylvania line aforesaid. Ohio is bounded by the Ohio River, but nearly all of the river belongs to Kentucky and West Virginia. In 1980, the U.S. Supreme Court held that, based on the wording of the cessation of territory by Virginia (which at the time included what is now Kentucky and West Virginia), the boundary between Ohio and Kentucky (and, by implication, West Virginia) is the northern low-water mark of

10395-798: The Shawnee, excluding the Pekowi in Southwest Ohio, were forcibly relocated west. Ohio played a key role in the War of 1812, as it was on the front line in the Western theater and the scene of several notable battles both on land and in Lake Erie . On September 10, 1813, the Battle of Lake Erie , one of the major battles, took place near Put-in-Bay, Ohio . The British eventually surrendered to Oliver Hazard Perry . Ultimately, after

10530-477: The U.S. The city lies in the USDA plant hardiness zone 6b except along the rivers where the zone is 7a. The area has four distinct seasons: winters are cold and snowy, springs and falls are mild with moderate levels of sunshine, and summers are warm. As measured by percent possible sunshine, summer is by far the sunniest season, though annual sunshine is low among major US cities at well under 50%. The warmest month of

10665-530: The U.S. government used the Indian Removal Act of 1830 to force countless Native American tribes on the Trail of Tears , where all the southern states except for Florida were successfully emptied of Native peoples, the government panicked because most tribes did not want to be forced out of their own lands. Fearing further wars between Native tribes and American settlers, they pushed all remaining Native tribes in

10800-583: The University and was intended to be used primarily to treat communicable diseases. However, when antibiotics virtually eliminated the need to quarantine patients, the building had become a financial burden on the city. Therefore, in September 1949, work began on remodeling the building, and it temporarily housed Pitt's School of Public Health . In October 1957, the Municipal Hospital was formally acquired from

10935-578: The aggressive tactics of the Iroquois Confederation , based in central and western New York. After the Beaver Wars in the mid-17th century, the Iroquois claimed much of the Ohio country as hunting and, more importantly, beaver-trapping ground. After the devastation of epidemics and war in the mid-17th century, which largely emptied the Ohio country of Indigenous people by the mid-to-late 17th century,

11070-399: The air and the rivers. The "Renaissance II" project followed in 1977, focused on cultural and neighborhood development. The industrial base continued to expand through the 1970s, but beginning in the early 1980s both the area's steel and electronics industries imploded during national industrial restructuring. There were massive layoffs from mill and plant closures. In the later 20th century,

11205-425: The area shifted its economic base to education, tourism, and services, largely based on healthcare/medicine, finance, and high technology such as robotics. Although Pittsburgh successfully shifted its economy and remained viable, the city's population has never rebounded to its industrial-era highs. While 680,000 people lived in the city proper in 1950, a combination of suburbanization and economic turbulence resulted in

11340-585: The area with renowned cultural institutions, including the Carnegie Museums of Pittsburgh , Pittsburgh Parks Conservancy , Pittsburgh Zoo & Aquarium , Phipps Conservatory and Botanical Gardens , the National Aviary , and a diverse cultural district . The city's major league professional sports teams include the Pittsburgh Steelers , Pittsburgh Penguins , and Pittsburgh Pirates . Pittsburgh

11475-528: The borders of Appalachia as defined by the Appalachian Regional Commission , and has long been characterized as the "northern urban industrial anchor of Appalachia." In its post-industrial state, Pittsburgh has been characterized as the "Paris of Appalachia", recognizing the city's cultural, educational, healthcare, and technological resources, and is the largest city in Appalachia. Under

11610-514: The city for $ 1.3 million ($ 14.1 million today) and renamed Jonas Salk Hall. For a time, the upper floors of the building served as a residence for students. Pitt remodeled it to house the School of Dental Medicine and School of Pharmacy in 1961-1962. The Salk Hall Annex, a major renovation and three-story addition designed by the architectural firm Deeter, Ritchey, and Sippel for the Dental School,

11745-481: The city's population. Pittsburgh also became a main destination of the African-American Great Migration from the rural South during the first half of the 20th century. Limited initially by discrimination, some 95% percent of the men became unskilled steel workers. During World War II , demand for steel increased and area mills operated 24 hours a day to produce 95 million tons of steel for

11880-595: The city's rivers and hollows. The Great Allegheny Passage and Chesapeake and Ohio Canal Towpath connect the city directly to downtown Washington, D.C. (some 335 miles [539 km] away) with a continuous bike/running trail. The city consists of the Downtown area, called the Golden Triangle, and four main areas surrounding it. These surrounding areas are subdivided into distinct neighborhoods (Pittsburgh has 90 neighborhoods). Relative to downtown, these areas are known as

12015-476: The community and various developers to create a master plan for a mixed-use development that included a riverfront park, office space, housing, health-care facilities, and indoor practice fields for the Pittsburgh Steelers and Pitt Panthers . Construction of the development began in 1998. The SouthSide Works has been open since 2005, featuring many stores, restaurants, offices, and the world headquarters for American Eagle Outfitters . The East End of Pittsburgh

12150-524: The construction of the Muskingum Academy (now Marietta College ). In 1780, the directors of the Ohio Company appointed him superintendent of all its affairs relating to the settlement north of the Ohio River. In 1796, President George Washington commissioned him as Surveyor-General of United States Lands. In 1788, he served as a judge in the Northwest Territory's first court. In 1802, he served in

12285-634: The continent. The Hopewell disappeared from the Ohio Valley about 600 AD. The Mississippian culture rose as the Hopewell culture declined. Many Siouan-speaking peoples from the plains and east coast claim them as ancestors and say they lived throughout the Ohio region until approximately the 13th century. There were three other cultures contemporaneous with the Mississippians: the Fort Ancient people,

12420-540: The convention to form a constitution for the State of Ohio. On February 19, 1803, U.S. President Thomas Jefferson signed an act of Congress that approved Ohio's boundaries and constitution. But Congress had not passed a formal resolution admitting Ohio as the 17th state. Although no formal resolution of admission was required, when the oversight was discovered in 1953, as Ohio began preparations for celebrating its sesquicentennial, Ohio congressman George H. Bender introduced

12555-464: The downtown skyline, and numerous other residential neighborhoods such as Sheraden and Elliott . Many of Pittsburgh's patchwork of neighborhoods still retain ethnic characters reflecting the city's settlement history. These include: Several neighborhoods on the edges of the city are less urban, featuring tree-lined streets, yards and garages, with a more suburban character. Oakland, the South Side,

12690-485: The end of the Civil War, the Union's top three generals— Ulysses S. Grant , William Tecumseh Sherman , and Philip Sheridan —were all from Ohio. During much of the 19th century, industry was rapidly introduced to complement an existing agricultural economy. One of the first iron manufacturing plants, Hopewell Furnace, opened near Youngstown in 1804. By the mid-19th century, 48 blast furnaces were operating in Ohio, most in

12825-421: The existing building by Ballinger Architects with associates DRS Architects. The new tower is planned to house laboratories and support spaces relocated from their current home in Salk Hall in order to free up space for additional classrooms and offices in the original structure. The target completion date is July, 2014. A dental museum is housed in the first floor reception area of Salk Hall. The museum contains

12960-492: The extreme southern counties of Ohio's Bluegrass region section, which are located on the northern periphery of the humid subtropical climate ( Cfa ) and Upland South region of the United States. Summers are typically hot and humid throughout the state, while winters generally range from cool to cold. Precipitation in Ohio is moderate year-round. Severe weather is not uncommon in the state, although there are typically fewer tornado reports in Ohio than in states located in what

13095-757: The first successful airplane. Ohio was hit by its greatest natural disaster in the Great Flood of 1913 , resulting in at least 428 fatalities and hundreds of millions of dollars in property damage, particularly around the Great Miami River basin. The National Football League was originally founded in Canton, Ohio in 1920 as the American Professional Football Conference. It included Ohio League teams in five Ohio cities (Akron, Canton, Cleveland, Columbus, and Dayton), none of which still exist. The first official game occurred on October 3, 1920, when

13230-464: The first time in 2020, and then also achieved that goal in 2021, 2022, and were on track for better results in 2023. Ohio Ohio ( / oʊ ˈ h aɪ . oʊ / oh- HY -oh ) is a state in the Midwestern region of the United States . It borders Lake Erie to the north, Pennsylvania to the east, West Virginia to the southeast, Kentucky to the southwest, Indiana to

13365-669: The governorship of Bob Taft , which aimed to increase investment in Ohio and boost its technology sector. As of 2010, the Ohio Department of Development attributes the creation of 9,500 jobs to this program, with an average salary of $ 65,000, while having a $ 6.6 billion economic impact with a return on investment of 9:1. In 2010 the state won the International Economic Development Council 's Excellence in Economic Development Award, celebrated as

13500-437: The highest appreciation of the largest 25 metropolitan statistical areas in the United States, with 22 of the largest 25 metropolitan statistical areas experiencing depreciations in housing values. In September 2009, the 2009 G20 Pittsburgh summit was held in Pittsburgh. Pittsburgh has an area of 58.3 square miles (151 km ), of which 55.6 square miles (144 km ) is land and 2.8 square miles (7.3 km ), or 4.75%,

13635-453: The land gradually became repopulated by the mostly Algonquian . Many of these Ohio-country nations were multiethnic (sometimes multi-linguistic) societies born out of the earlier devastation brought about by disease, war, and subsequent social instability. They subsisted on agriculture (corn, sunflowers, beans, etc.) supplemented by seasonal hunts. By the 18th century, they were part of a larger global economy brought about by European entry into

13770-537: The lands west of the Appalachian Mountains that were contested by various native tribes and European colonists from the 17th century through the Northwest Indian Wars of the late 18th century. Ohio was partitioned from the Northwest Territory , the first frontier of the new United States, becoming the 17th state admitted to the Union on March 1, 1803, and the first under the Northwest Ordinance . It

13905-435: The most U.S. stockholders per capita. Deindustrialization in the late 20th century resulted in massive layoffs among blue-collar workers as steel and other heavy industries declined, coinciding with several Pittsburgh-based corporations moving out of the city. However, the city divested from steel and, since the 1990s, Pittsburgh has focused its energies on the healthcare, education, and technology industries. Pittsburgh

14040-525: The movement of Natives and Americans between the Ohio Country and Thirteen Colonies had resulted in tension. Fort Pitt in Pennsylvania had become the main fort where expeditions into Ohio started. Intrusions into the area included General Edward Hand 's 1778 movement of 500 Pennsylvania militiamen from Fort Pitt towards Mingo towns on the Cuyahoga River , where the British stored military supplies which they distributed to Indian raiding parties; Colonel Daniel Brodhead 's invasion in 1780 and destruction of

14175-450: The museum's possessions are two hand-carved finials , which were often found over the door or partitions that separated the main part of the pharmacy from the back room where pharmacists did most of their work, an old-fashioned powder mill , and a konseal machine. Pittsburgh Pittsburgh ( / ˈ p ɪ t s b ɜːr ɡ / PITS -burg ) is a city in and the county seat of Allegheny County, Pennsylvania , United States. It

14310-583: The northern Atlantic Ocean via Lake Erie and the St. Lawrence River , and those in southern Ohio drain into the Gulf of Mexico via the Ohio River and the Mississippi . Ohio also includes Bass Islands and Kelleys Island . Grand Lake St. Marys in the west-central part of the state was constructed as a supply of water for canals in the canal-building era of 1820–1850. This body of water, over 20 square miles (52 km ),

14445-465: The original Warner Brothers , who set up their first movie theatre in Youngstown before the company relocated to California. The state produced many popular musicians, including Dean Martin , Doris Day , The O'Jays , Marilyn Manson , Dave Grohl , Devo , Macy Gray and The Isley Brothers . Two Ohio astronauts completed significant milestones in the space race in the 1960s: John Glenn becoming

14580-495: The record cold daily maximum is −3 °F (−19 °C), which occurred three times, most recently the day of the all-time record low, while, conversely, the record warm daily minimum is 82 °F (28 °C) on July 1, 1901. Due to elevation and location on the windward side of the Appalachian Mountains, 100 °F (38 °C)+ readings are very rare, and were last seen on July 15, 1995. Average annual precipitation

14715-475: The rest of the state. This interesting change may be observed while traveling through Ohio on Interstate 75 from Cincinnati to Toledo ; the observant traveler of this diverse state may even catch a glimpse of Cincinnati's common wall lizard , one of the few examples of permanent "subtropical" fauna in Ohio. The worst weather disaster in Ohio history occurred along the Great Miami River in 1913. Known as

14850-523: The river as it existed in 1792. Ohio has only that portion of the river between the river's 1792 low-water mark and the present high-water mark. The border with Michigan has also changed, as a result of the Toledo War , to angle slightly northeast to the north shore of the mouth of the Maumee River. Much of Ohio features glaciated till plains , with an exceptionally flat area in the northwest being known as

14985-662: The same time. The old Northwest Territory originally included areas previously known as Ohio Country and Illinois Country . As Ohio prepared for statehood, the Indiana Territory was created, reducing the Northwest Territory to approximately the size of present-day Ohio plus the eastern half of the Lower Peninsula of Michigan and the eastern tip of the Upper Peninsula and a sliver of southeastern Indiana called "The Gore". The coalition of Native American tribes, known as

15120-571: The southern part of the state. Discovery of coal deposits aided the further development of Ohio's steel industry, and by 1853 Cleveland was the nation's third-largest iron and steel producer. The first Bessemer converter was purchased by the Cleveland Rolling Mill Company , which became part of the U.S. Steel Corporation after the merger of Federal Steel Company and Carnegie Steel , the first billion-dollar American corporation. The first open-hearth furnace used for steel production

15255-424: The state throughout the 20th century and often moved to other cities that were larger centers for their work. They included Zane Grey , Milton Caniff , George Bellows , Art Tatum , Roy Lichtenstein , and Roy Rogers . Alan Freed , who emerged from the swing dance culture in Cleveland, hosted the first live rock 'n roll concert in Cleveland in 1952. Famous filmmakers include Steven Spielberg , Chris Columbus and

15390-667: The state unemployment rate reaching a high of 37.3%. American Jews watched the rise of Nazi Germany with apprehension. Cleveland residents Jerry Siegel and Joe Shuster created the Superman comic character in the spirit of the Jewish golem . Many of their comics portrayed Superman fighting and defeating the Nazis . Approximately 839,000 Ohioans served in the U.S. armed forces during World War II , of whom over 23,000 died or were missing in action. Artists, writers, musicians and actors developed in

15525-508: The state, sometimes assimilating in part. Starting around 1809, the Shawnee pressed resistance to encroachment again. Under Chief Tecumseh , Tecumseh's War officially began in Ohio in 1811. When the War of 1812 began, the British decided to attack from Upper Canada into Ohio and merge their forces with the Shawnee. This continued until Tecumseh was killed at the Battle of the Thames in 1813. Most of

15660-541: The state. During the 18th century, the French set up a system of trading posts to control the fur trade in the region. Beginning in 1754, the Kingdom of France and Kingdom of Great Britain fought in the French and Indian War , with various Native American tribes on each side. As a result of the Treaty of Paris , the French ceded control of Ohio and the remainder of the Old Northwest to Great Britain in 1763. Before

15795-610: The success of many Republican candidates in Ohio since the late 2000s has led many to question whether Ohio remains an electoral battleground. On March 9, 2020, the COVID-19 pandemic reached Ohio, with three cases reported. As of February 2023, over 41,600 Ohioans have died from COVID-19. Ohio's economy was also heavily impacted by the pandemic, as the state saw large job losses in 2020, as well as large amounts of subsequent stimulus spending . Ohio's location has proven to be an asset for economic growth and expansion. Because it links

15930-852: The universities, and the Petersen Events Center . The Strip District to the west along the Allegheny River is an open-air marketplace by day and a clubbing destination by night. Bloomfield is Pittsburgh's Little Italy and is known for its Italian restaurants and grocers. Lawrenceville is a revitalizing rowhouse neighborhood popular with artists and designers. The Hill District was home to photographer Charles Harris as well as various African-American jazz clubs. Other East End neighborhoods include Point Breeze , Regent Square , Highland Park , Homewood , Lincoln-Lemington-Belmar , Larimer , East Hills , East Liberty , Polish Hill , Hazelwood , Garfield, Morningside, and Stanton Heights. The West End includes Mt. Washington , with its famous view of

16065-552: The value of homes in the South Side had increased in value by about 10% annually for the 10 years leading up to 2014. East Carson Street has developed as one of the most vibrant areas of the city, packed with diverse shopping, ethnic eateries, vibrant nightlife, and live music venues. In 1993, the Urban Redevelopment Authority of Pittsburgh purchased the South Side Works steel mill property. It collaborated with

16200-400: The war effort. This resulted in the highest levels of air pollution in the city's almost century of industry. The city's reputation as the "arsenal of democracy" was being overshadowed by James Parton 's 1868 observation of Pittsburgh being "hell with the lid off." Following World War II, the city launched a clean air and civic revitalization project known as the "Renaissance," cleaning up

16335-482: The war. It contributed more soldiers per capita than any other state in the Union. In 1862, the state's morale was badly shaken in the aftermath of the Battle of Shiloh , a costly victory in which Ohio forces suffered 2,000 casualties. Later that year, when Confederate troops under the leadership of Stonewall Jackson threatened Washington, D.C., Ohio governor David Tod recruited 5,000 volunteers to provide three months of service. From July 13 to 26, 1863, towns along

16470-401: The west, and Michigan to the northwest. Of the 50 U.S. states , it is the 34th-largest by area . With a population of nearly 11.8 million, Ohio is the seventh-most populous and tenth-most densely populated state . Its capital and most populous city is Columbus , with other large population centers including Cleveland , Cincinnati , Dayton , Akron , and Toledo . Ohio is nicknamed

16605-604: The year in Pittsburgh is July, with a 24-hour average of 73.2 °F (22.9 °C). Conditions are often humid, and combined with highs reaching 90 °F (32 °C) on an average 9.5 days a year, a considerable heat index arises. The coolest month is January, when the 24-hour average is 28.8 °F (−1.8 °C), and lows of 0 °F (−18 °C) or below can be expected on an average 2.6 nights per year. Officially, record temperatures range from −22 °F (−30 °C), on January 19, 1994 to 103 °F (39 °C), which occurred three times, most recently on July 16, 1988;

16740-521: Was completed the Terrace Street side of the building in 1967 for a cost of over $ 5 million ($ 48.3 million today). Today, it serves as a main entrance for Salk Hall and the dental clinics. A new $ 50.6 million ($ 71 million today) addition and renovation to Salk Hall was announced in January 2010. It will include the construction of an 80,000-square-foot (7,400 m) research tower in the parking area behind

16875-634: Was constructed by the Otis Steel Company in Cleveland, and by 1892, Ohio was the second-largest steel-producing state, behind Pennsylvania. Republic Steel was founded in Youngstown in 1899 and was at one point the nation's third-largest producer. Armco , now AK Steel, was founded in Middletown in 1899. The state legislature officially adopted the flag of Ohio on May 9, 1902. Dayton natives Orville and Wilbur Wright made four brief flights at Kitty Hawk, North Carolina , on December 17, 1903, inventing

17010-486: Was federally recognized as "Pittsburg", though use of the final h was retained during this period by the city government and other local organizations. After a public campaign, the federal decision to drop the h was reversed. The Pittsburg Press continued spelling the city without an h until 1921. [REDACTED]   Kingdom of France 1690s–1763 [REDACTED]   Great Britain 1681–1781 [REDACTED]   United States 1776–present The area of

17145-456: Was given the western two-thirds of the Upper Peninsula , in addition to the eastern third, which was already considered part of the territory. Ohio's central position and its population gave it an important place in the Civil War . The Ohio River was a vital artery for troop and supply movements, as were Ohio's railroads. Ohio's industry made it one of the most important states in the Union during

17280-528: Was incorporated as a borough on April 22, 1794, with the following Act: "Be it enacted by the Pennsylvania State Senate and Pennsylvania House of Representatives of the Commonwealth of Pennsylvania ... by the authority of the same, that the said town of Pittsburgh shall be ... erected into a borough, which shall be called the borough of Pittsburgh for ever." From 1891 to 1911, the city's name

17415-506: Was once the site of railyards and associated dense, inexpensive housing for mill and railroad workers. Starting in the late 20th century, the city undertook a Main Street program in cooperation with the National Trust for Historic Preservation , encouraging design and landscape improvements on East Carson Street, and supporting new retail. The area has become a local Pittsburgher destination, and

17550-530: Was producing significant quantities of iron, brass, tin, and glass. On March 18, 1816, the 46-year-old local government became a city. It was served by numerous river steamboats that increased trading traffic on the rivers. In the 1830s, many Welsh people from the Merthyr steelworks immigrated to the city following the aftermath of the Merthyr Rising . By the 1840s, Pittsburgh was one of the largest cities west of

17685-617: Was the nation's eighth-largest city , accounting for between one-third and one-half of national steel output. The Pittsburgh Agreement was subscribed in May 1918 between the Czech and Slovak nationalities, as envisioned by T. G. Masaryk , concerning the future foundation of Czechoslovakia . The city suffered severe flooding in March 1936. The city's population swelled to more than a half million, attracting numerous European immigrants to its industrial jobs. By 1940, non-Hispanic whites were 90.6% of

17820-403: Was the capital from 1803 to 1810. The capital was then moved to Zanesville for two years as part of a state legislative compromise to get a bill passed. The capital was then moved back to Chillicothe from 1812 to 1816. Finally, the capital was moved to Columbus, to be near the state's geographic center. Although many Native Americans migrated west to evade American encroachment, others remained in

17955-565: Was the first constable, and William Troop was the first clerk. Following the American Revolution , the village of Pittsburgh continued to grow. One of its earliest industries was boat building for settlers of the Ohio Country . In 1784, Thomas Vickroy completed a town plan which was approved by the Penn family attorney. Pittsburgh became a possession of Pennsylvania in 1785. The following year,

18090-525: Was the first post-colonial free state admitted to the union and became one of the earliest and most influential industrial powerhouses during the 20th century. Although it has transitioned to a more information- and service-based economy in the 21st century, it remains an industrial state, ranking seventh in GDP as of 2019 , with the third-largest manufacturing sector and second-largest automobile production. Modeled on its federal counterpart, Ohio's government

18225-741: Was the largest artificial lake in the world when completed in 1845. Ohio's canal-building projects were not the economic fiasco that similar efforts were in other states. Some cities, such as Dayton, owe their industrial emergence to their location on canals, and as late as 1910 interior canals carried much of the bulk freight of the state. Areas under the protection of the National Park Service include Cuyahoga Valley National Park , Hopewell Culture National Historical Park , Dayton Aviation Heritage National Historical Park , First Ladies National Historic Site , James A. Garfield National Historic Site , William Howard Taft National Historic Site , and

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