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103-622: The parallel 36°30′ north is a circle of latitude that is 36 1 ⁄ 2 degrees north of the equator of the Earth. This parallel of latitude is particularly significant in the history of the United States as the line of the Missouri Compromise , which was used to divide the prospective slave and free states west of the Mississippi River , with the exception of Missouri , which
206-567: A cave near Tehuacán , Mexico, have been dated to as early as 5500 BC, but this date has been challenged. More securely dated is the domestication of Gossypium hirsutum in Mexico between around 3400 and 2300 BC. During this time, people between the Río Santiago and the Río Balsas grew, spun, wove, dyed, and sewed cotton. What they did not use themselves, they sent to their Aztec rulers as tribute, on
309-710: A circle of latitude is given by its longitude . Circles of latitude are unlike circles of longitude, which are all great circles with the centre of Earth in the middle, as the circles of latitude get smaller as the distance from the Equator increases. Their length can be calculated by a common sine or cosine function. For example, the 60th parallel north or south is half as long as the Equator (disregarding Earth's minor flattening by 0.335%), stemming from cos ( 60 ∘ ) = 0.5 {\displaystyle \cos(60^{\circ })=0.5} . On
412-538: A commercial chain in which raw cotton fibers were (at first) purchased from colonial plantations , processed into cotton cloth in the mills of Lancashire , and then exported on British ships to captive colonial markets in West Africa , India , and China (via Shanghai and Hong Kong). By the 1840s, India was no longer capable of supplying the vast quantities of cotton fibers needed by mechanized British factories, while shipping bulky, low-price cotton from India to Britain
515-704: A deficit spiral that led to the country declaring bankruptcy in 1876, a key factor behind Egypt's occupation by the British Empire in 1882 . During this time, cotton cultivation in the British Empire , especially Australia and India, greatly increased to replace the lost production of the American South. Through tariffs and other restrictions, the British government discouraged the production of cotton cloth in India; rather,
618-607: A farmer who farmed one of the biggest cotton operations. He produced over sixty thousand bales. Cotton remained a key crop in the Southern economy after slavery ended in 1865. Across the South, sharecropping evolved, in which landless farmers worked land owned by others in return for a share of the profits. Some farmers rented the land and bore the production costs themselves. Until mechanical cotton pickers were developed, cotton farmers needed additional labor to hand-pick cotton. Picking cotton
721-484: A great deal of resources would have been required, likely restricting its cultivation to the elite. In the first to third centuries CE, recovered cotton fragments all began to mirror the same style and production method, as seen from the direction of spun cotton and technique of weaving. Cotton textiles also appear in places of high regard, such as on funerary stelae and statues. During the Han dynasty (207 BC - 220 AD), cotton
824-447: A map, the circles of latitude may or may not be parallel, and their spacing may vary, depending on which projection is used to map the surface of the Earth onto a plane. On an equirectangular projection , centered on the equator, the circles of latitude are horizontal, parallel, and equally spaced. On other cylindrical and pseudocylindrical projections, the circles of latitude are horizontal and parallel, but may be spaced unevenly to give
927-422: A new market for British goods, while the capital amassed from Bengal after its 1757 conquest was used to invest in British industries such as textile manufacturing and greatly increase British wealth. British colonization also forced open the large Indian market to British goods, which could be sold in India without tariffs or duties , compared to local Indian producers who were heavily taxed , while raw cotton
1030-494: A new revenue system that was biased in favour of higher value cash crops such as cotton and indigo , providing state incentives to grow cash crops, in addition to rising market demand. The largest manufacturing industry in the Mughal Empire was cotton textile manufacturing , which included the production of piece goods , calicos , and muslins , available unbleached and in a variety of colours. The cotton textile industry
1133-660: A province he calls Khotan in Turkestan, today's Xinjiang , where cotton was grown in abundance. The word entered the Romance languages in the mid-12th century, and English a century later. Cotton fabric was known to the ancient Romans as an import, but cotton was rare in the Romance-speaking lands until imports from the Arabic-speaking lands in the later medieval era at transformatively lowered prices. The earliest evidence of
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#17328446931841236-451: Is a soft, fluffy staple fiber that grows in a boll , or protective case, around the seeds of the cotton plants of the genus Gossypium in the mallow family Malvaceae . The fiber is almost pure cellulose , and can contain minor percentages of waxes , fats , pectins , and water . Under natural conditions, the cotton bolls will increase the dispersal of the seeds. The plant is a shrub native to tropical and subtropical regions around
1339-505: Is drawn as a "line on a map", which was made in massive scale during the 1884 Berlin Conference , regarding huge parts of the African continent. North American nations and states have also mostly been created by straight lines, which are often parts of circles of latitudes. For instance, the northern border of Colorado is at 41° N while the southern border is at 37° N . Roughly half
1442-516: Is equal to the Earth's axial tilt. By definition, the positions of the Tropic of Cancer , Tropic of Capricorn , Arctic Circle and Antarctic Circle all depend on the tilt of the Earth's axis relative to the plane of its orbit around the Sun (the "obliquity of the ecliptic"). If the Earth were "upright" (its axis at right angles to the orbital plane) there would be no Arctic, Antarctic, or Tropical circles: at
1545-607: Is ineffective against many cotton pests, such as plant bugs , stink bugs , and aphids ; depending on circumstances it may still be desirable to use insecticides against these. A 2006 study done by Cornell researchers, the Center for Chinese Agricultural Policy and the Chinese Academy of Science on Bt cotton farming in China found that after seven years these secondary pests that were normally controlled by pesticide had increased, necessitating
1648-663: Is mostly north of this parallel. The line continues to hold cultural, economic, and political significance to this day; the Kinder Institute for Urban Research defines the Sun Belt as being south of 36°30′N latitude. In the United States , the parallel 36°30′ forms part of the boundary between Tennessee and Kentucky , in the region west of the Tennessee River and east of the Mississippi River . This parallel also forms part of
1751-638: Is native to the Indian subcontinent. According to the Columbia Encyclopedia : Cotton has been spun, woven, and dyed since prehistoric times. It clothed the people of ancient India, Egypt, and China. Hundreds of years before the Christian era, cotton textiles were woven in India with matchless skill, and their use spread to the Mediterranean countries. In Iran ( Persia ), the history of cotton dates back to
1854-605: Is slightly further north at 37°. In southeastern Missouri, the Missouri Bootheel along the Mississippi River extends about 50 miles (80 kilometers) to the south, all the way to the 36th parallel north , and about 30 miles (50 kilometers) inland. This was because politicians in that region along that major river felt that it would be advantageous to be located in Missouri rather than in the Arkansas Territory , which became
1957-463: Is the longest circle of latitude and is the only circle of latitude which also is a great circle. As such, it is perpendicular to all meridians. There are 89 integral (whole degree ) circles of latitude between the Equator and the poles in each hemisphere , but these can be divided into more precise measurements of latitude, and are often represented as a decimal degree (e.g. 34.637° N) or with minutes and seconds (e.g. 22°14'26" S). On
2060-559: The Achaemenid era (5th century BC); however, there are few sources about the planting of cotton in pre-Islamic Iran. Cotton cultivation was common in Merv , Ray and Pars . In Persian poems, especially Ferdowsi 's Shahname , there are references to cotton ("panbe" in Persian ). Marco Polo (13th century) refers to the major products of Persia, including cotton. John Chardin , a French traveler of
2163-623: The Confederate States of America . All of the states with land north of the parallel, except Virginia, stayed in the Union, although Kentucky and Missouri had Confederate legislatures that were elected in parallel with their regular legislatures. Also Maryland , another slave state, was occupied by the Union Army under the commands of President Abraham Lincoln , and its legislature was thus pressured into voting not to secede. Naturally, Lincoln and
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#17328446931842266-623: The Deep South . To acknowledge cotton's place in the history and heritage of Texas, the Texas Legislature designated cotton the official "State Fiber and Fabric of Texas" in 1997. China's Chang'e 4 spacecraft took cotton seeds to the Moon's far side . On 15 January 2019, China announced that a cotton seed sprouted, the first "truly otherworldly plant in history". Inside the Von Kármán Crater ,
2369-466: The Delhi Sultanate . During the late medieval period, cotton became known as an imported fiber in northern Europe, without any knowledge of how it was derived, other than that it was a plant. Because Herodotus had written in his Histories , Book III, 106, that in India trees grew in the wild producing wool, it was assumed that the plant was a tree, rather than a shrub. This aspect is retained in
2472-518: The Industrial Revolution in Britain provided a great boost to cotton manufacture, as textiles emerged as Britain's leading export. In 1738, Lewis Paul and John Wyatt , of Birmingham , England, patented the roller spinning machine, as well as the flyer-and-bobbin system for drawing cotton to a more even thickness using two sets of rollers that traveled at different speeds. Later, the invention of
2575-461: The James Hargreaves ' spinning jenny in 1764, Richard Arkwright 's spinning frame in 1769 and Samuel Crompton 's spinning mule in 1775 enabled British spinners to produce cotton yarn at much higher rates. From the late 18th century on, the British city of Manchester acquired the nickname " Cottonopolis " due to the cotton industry's omnipresence within the city, and Manchester's role as
2678-550: The Kansas Territory in 1854, and the Colorado Territory in 1861 moved the boundaries of one of the western territories, New Mexico, north to the 37th parallel north . New Mexico Territory was eventually split in two states, New Mexico and Arizona , which were admitted in 1912, but this was long after the 13th Amendment had abolished slavery in all of the United States. The gap between the northern boundary of Texas on
2781-641: The Mercator projection or on the Gall-Peters projection , a circle of latitude is perpendicular to all meridians . On the ellipsoid or on spherical projection, all circles of latitude are rhumb lines , except the Equator. The latitude of the circle is approximately the angle between the Equator and the circle, with the angle's vertex at Earth's centre. The Equator is at 0°, and the North Pole and South Pole are at 90° north and 90° south, respectively. The Equator
2884-583: The Prime Meridian and heading eastwards, the parallel 36°30′ north passes through: Circle of latitude A circle of latitude or line of latitude on Earth is an abstract east – west small circle connecting all locations around Earth (ignoring elevation ) at a given latitude coordinate line . Circles of latitude are often called parallels because they are parallel to each other; that is, planes that contain any of these circles never intersect each other. A location's position along
2987-592: The Royal Colonial Boundary of 1665 that set the boundary of the Colony of Virginia and the Province of Carolina . In 1779 and 1780, surveyors were sent to mark the line on the ground as far as the Tennessee River . As they worked west their line drifted north until by the time they reached the river they were about 10′ north of 36°30′. Despite this error the boundary was set along the line surveyed. The final part of
3090-546: The U.S. Senate between the free states and the slaveholding states. The bulk of Missouri lies north of the 36°30′ line, but Southern planters who lived in southeastern Missouri supported slavery, especially for farming on their cotton plantations. Hence, part of the Missouri Compromise arose from this. Also, the slave states of the Southern United States wanted to have the support of another slave state so
3193-533: The 17th century who visited Safavid Persia , spoke approvingly of the vast cotton farms of Persia. Cotton ( Gossypium herbaceum Linnaeus) may have been domesticated 5000 BC in eastern Sudan near the Middle Nile Basin region, where cotton cloth was being produced. Around the 4th century BC, the cultivation of cotton and the knowledge of its spinning and weaving in Meroë reached a high level. The export of textiles
Parallel 36°30′ north - Misplaced Pages Continue
3296-503: The 1840s. Indian cotton textiles, particularly those from Bengal , continued to maintain a competitive advantage up until the 19th century. In order to compete with India, Britain invested in labour-saving technical progress, while implementing protectionist policies such as bans and tariffs to restrict Indian imports. At the same time, the East India Company's rule in India contributed to its deindustrialization , opening up
3399-490: The 1900s. While cotton fibers occur naturally in colors of white, brown, pink and green, fears of contaminating the genetics of white cotton have led many cotton-growing locations to ban the growing of colored cotton varieties. The word "cotton" has Arabic origins , derived from the Arabic word قطن ( qutn or qutun ). This was the usual word for cotton in medieval Arabic . Marco Polo in chapter 2 in his book, describes
3502-499: The 19th century. India's cotton-processing sector changed during EIC expansion in India in the late 18th and early 19th centuries. From focusing on supplying the British market to supplying East Asia with raw cotton. As the Artisan produced textiles were no longer competitive with those produced Industrially, and Europe preferring the cheaper slave produced, long staple American, and Egyptian cottons, for its own materials. The advent of
3605-577: The 36°30′ latitude to the Federal Government . Over the following half-century, this land became parts of Kansas , Colorado , New Mexico , and Oklahoma. The Compromise of 1850 confirmed that the 36°30′ parallel was the northmost boundary of Texas. Then Kansas was admitted to the Union as a free state in 1861. The creation of the New Mexico Territory and the Utah Territory in 1850,
3708-661: The British to cheap calico and chintz cloth on the restoration of the monarchy in the 1660s. Initially imported as a novelty side line, from its spice trading posts in Asia, the cheap colourful cloth proved popular and overtook the EIC's spice trade by value in the late 17th century. The EIC embraced the demand, particularly for calico , by expanding its factories in Asia and producing and importing cloth in bulk, creating competition for domestic woollen and linen textile producers. The impacted weavers, spinners, dyers, shepherds and farmers objected and
3811-615: The Egyptian cotton industry. By the time of the American Civil war annual exports had reached $ 16 million (120,000 bales), which rose to $ 56 million by 1864, primarily due to the loss of the Confederate supply on the world market. Exports continued to grow even after the reintroduction of US cotton, produced now by a paid workforce, and Egyptian exports reached 1.2 million bales a year by 1903. The English East India Company (EIC) introduced
3914-535: The Equator, mark the divisions between the five principal geographical zones . The equator is the circle that is equidistant from the North Pole and South Pole . It divides the Earth into the Northern Hemisphere and the Southern Hemisphere . Of the parallels or circles of latitude, it is the longest, and the only ' great circle ' (a circle on the surface of the Earth, centered on Earth's center). All
4017-620: The Kentucky-Tennessee boundary, between the Tennessee River and the Mississippi River , was not surveyed until after 1819 when treaties extinguished Native American claims in the area. The final portion was surveyed east from the Mississippi River along 36°30′. Due to the relative precision of the survey of 36°30′ on the Mississippi River, Congress decided to continue the line west as the northern boundary of Arkansas Territory , with
4120-491: The Mughal era. It was reported that, with an Indian cotton gin, which is half machine and half tool, one man and one woman could clean 28 pounds (13 kg) of cotton per day. With a modified Forbes version, one man and a boy could produce 250 pounds (110 kg) per day. If oxen were used to power 16 of these machines, and a few people's labour was used to feed them, they could produce as much work as 750 people did formerly. In
4223-463: The Northern and Southern hemispheres, but a large proportion of the cotton grown today is cultivated in areas with less rainfall that obtain the water from irrigation. Production of the crop for a given year usually starts soon after harvesting the preceding autumn. Cotton is naturally a perennial but is grown as an annual to help control pests. Planting time in spring in the Northern hemisphere varies from
Parallel 36°30′ north - Misplaced Pages Continue
4326-513: The Senate could not abolish slavery in the United States. This situation remained in effect for decades because as the free states of Michigan , Wisconsin , and Iowa were admitted to the Union, the new slave states of Arkansas , Florida , and Texas were also admitted. When the Republic of Texas joined the United States in 1845 as a slave state, it was required to cede all of its claimed land north of
4429-464: The State of Arkansas in 1836. The parallel 36°30′ then forms the rest of the boundary between Missouri and Arkansas. The Missouri Compromise of 1820 established the latitude 36°30′ as the northern limit for slavery to be legal in the territories of the west. As part of this compromise, Maine (formerly a part of Massachusetts ) was admitted as a free state. This addition maintained the balance of power in
4532-599: The Tropical Circles are drifting towards the equator (and the Polar Circles towards the poles) by 15 m per year, and the area of the Tropics , defined astronomically, is decreasing by 1,100 km (420 sq mi) per year. (However, the tropical belt as defined based on atmospheric conditions is expanding due to global warming . ) The Earth's axial tilt has additional shorter-term variations due to nutation , of which
4635-495: The Tropics and Polar Circles and also on the Equator. Short-term fluctuations over a matter of days do not directly affect the location of the extreme latitudes at which the Sun may appear directly overhead, or at which 24-hour day or night is possible, except when they actually occur at the time of the solstices. Rather, they cause a theoretical shifting of the parallels, that would occur if the given axis tilt were maintained throughout
4738-473: The United States, even with the use of humans as slave labor. The gin that Whitney manufactured (the Holmes design) reduced the hours down to just a dozen or so per bale. Although Whitney patented his own design for a cotton gin, he manufactured a prior design from Henry Odgen Holmes, for which Holmes filed a patent in 1796. Improving technology and increasing control of world markets allowed British traders to develop
4841-578: The backbone of the southern American economy. In the United States, cultivating and harvesting cotton became the leading occupation of slaves . During the American Civil War , American cotton exports slumped due to a Union blockade on Southern ports , and because of a strategic decision by the Confederate government to cut exports, hoping to force Britain to recognize the Confederacy or enter
4944-424: The basis of a new indigenous industry, initially producing Fustian for the domestic market, though more importantly triggering the development of a series of mechanised spinning and weaving technologies, to process the material. This mechanised production was concentrated in new cotton mills , which slowly expanded until by the beginning of the 1770s seven thousand bales of cotton were imported annually, and pressure
5047-631: The beginning of February to the beginning of June. The area of the United States known as the South Plains is the largest contiguous cotton-growing region in the world. While dryland (non-irrigated) cotton is successfully grown in this region, consistent yields are only produced with heavy reliance on irrigation water drawn from the Ogallala Aquifer . Since cotton is somewhat salt and drought tolerant, this makes it an attractive crop for arid and semiarid regions. As water resources get tighter around
5150-588: The boundary between Missouri and Arkansas in the region west of the St. Francis River , and part of the boundary between the Oklahoma Panhandle and the Texas Panhandle . The rest of the boundaries between Virginia and North Carolina ; between Virginia and Tennessee ; and between Tennessee and Kentucky lie close to the parallel 36°30′. The boundary between Kentucky and Tennessee was defined as 36°30′, based on
5253-434: The calico question became one of the major issues of National politics between the 1680s and the 1730s. Parliament began to see a decline in domestic textile sales, and an increase in imported textiles from places like China and India . Seeing the East India Company and their textile importation as a threat to domestic textile businesses, Parliament passed the 1700 Calico Act, blocking the importation of cotton cloth. As there
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#17328446931845356-427: The capsule and seeds sit inside the Chang'e 4 lander. Successful cultivation of cotton requires a long frost -free period, plenty of sunshine, and a moderate rainfall, usually from 50 to 100 cm (19.5 to 39.5 in). Soils usually need to be fairly heavy , although the level of nutrients does not need to be exceptional. In general, these conditions are met within the seasonally dry tropics and subtropics in
5459-455: The coast for large supplies of fish. The Spanish who came to Mexico and Peru in the early 16th century found the people growing cotton and wearing clothing made of it. The Greeks and the Arabs were not familiar with cotton until the Wars of Alexander the Great , as his contemporary Megasthenes told Seleucus I Nicator of "there being trees on which wool grows" in "Indica." This may be a reference to "tree cotton", Gossypium arboreum , which
5562-443: The dual-roller gin was prevalent throughout the Mediterranean cotton trade by the 16th century. This mechanical device was, in some areas, driven by water power. The earliest clear illustrations of the spinning wheel come from the Islamic world in the eleventh century. The earliest unambiguous reference to a spinning wheel in India is dated to 1350, suggesting that the spinning wheel was likely introduced from Iran to India during
5665-457: The early 19th century had the fifth most productive cotton industry in the world, in terms of the number of spindles per capita. The industry was initially driven by machinery that relied on traditional energy sources, such as animal power , water wheels , and windmills , which were also the principal energy sources in Western Europe up until around 1870. It was under Muhammad Ali in the early 19th century that steam engines were introduced to
5768-487: The early 19th century, a Frenchman named M. Jumel proposed to the great ruler of Egypt, Mohamed Ali Pasha , that he could earn a substantial income by growing an extra-long staple Maho ( Gossypium barbadense ) cotton, in Lower Egypt , for the French market. Mohamed Ali Pasha accepted the proposition and granted himself the monopoly on the sale and export of cotton in Egypt ; and later dictated cotton should be grown in preference to other crops. Egypt under Muhammad Ali in
5871-421: The endes of its branches. These branches were so pliable that they bent down to allow the lambs to feed when they are hungry." (See Vegetable Lamb of Tartary .) Cotton manufacture was introduced to Europe during the Muslim conquest of the Iberian Peninsula and Sicily . The knowledge of cotton weaving was spread to northern Italy in the 12th century, when Sicily was conquered by the Normans , and consequently to
5974-404: The exception of the Missouri Bootheel . The parallel 36°30′ north is part of a nearly straight east–west line of state borders (with small variations) starting on the East Coast of the United States , beginning with the border between Virginia and North Carolina. However, this boundary and the one between Kentucky and Tennessee lie a few miles north of 36°30′ in places. The line west of Arkansas
6077-480: The fifth millennium BC have been found in the Indus Valley civilization , as well as fabric remnants dated back to 4200 BC in Peru . Although cultivated since antiquity, it was the invention of the cotton gin that lowered the cost of production that led to its widespread use, and it is the most widely used natural fiber cloth in clothing today. Current estimates for world production are about 25 million tonnes or 110 million bales annually, accounting for 2.5% of
6180-421: The fourth largest GM cotton crop area of 2.6 million hectares in 2011. The initial introduction of GM cotton proved to be a success in Australia – the yields were equivalent to the non-transgenic varieties and the crop used much less pesticide to produce (85% reduction). The subsequent introduction of a second variety of GM cotton led to increases in GM cotton production until 95% of the Australian cotton crop
6283-496: The heart of the global cotton trade. Production capacity in Britain and the United States was improved by the invention of the modern cotton gin by the American Eli Whitney in 1793. Before the development of cotton gins, the cotton fibers had to be pulled from the seeds tediously by hand. By the late 1700s, a number of crude ginning machines had been developed. However, to produce a bale of cotton required over 600 hours of human labor, making large-scale production uneconomical in
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#17328446931846386-406: The horizon for 24 hours (at the December and June Solstices respectively). The latitude of the polar circles is equal to 90° minus the Earth's axial tilt . The Tropic of Cancer and Tropic of Capricorn mark the northernmost and southernmost latitudes at which the Sun may be seen directly overhead at the June solstice and December solstice respectively. The latitude of the tropical circles
6489-471: The length of the border between the United States and Canada follows 49° N . There are five major circles of latitude, listed below from north to south. The position of the Equator is fixed (90 degrees from Earth's axis of rotation) but the latitudes of the other circles depend on the tilt of this axis relative to the plane of Earth's orbit, and so are not perfectly fixed. The values below are for 22 November 2024: These circles of latitude, excluding
6592-429: The main pests in commercial cotton are lepidopteran larvae, which are killed by the Bt protein in the transgenic cotton they eat. This eliminates the need to use large amounts of broad-spectrum insecticides to kill lepidopteran pests (some of which have developed pyrethroid resistance). This spares natural insect predators in the farm ecology and further contributes to noninsecticide pest management. However, Bt cotton
6695-399: The main term, with a period of 18.6 years, has an amplitude of 9.2″ (corresponding to almost 300 m north and south). There are many smaller terms, resulting in varying daily shifts of some metres in any direction. Finally, the Earth's rotational axis is not exactly fixed in the Earth, but undergoes small fluctuations (on the order of 15 m) called polar motion , which have a small effect on
6798-627: The map useful characteristics. For instance, on a Mercator projection the circles of latitude are more widely spaced near the poles to preserve local scales and shapes, while on a Gall–Peters projection the circles of latitude are spaced more closely near the poles so that comparisons of area will be accurate. On most non-cylindrical and non-pseudocylindrical projections, the circles of latitude are neither straight nor parallel. Arcs of circles of latitude are sometimes used as boundaries between countries or regions where distinctive natural borders are lacking (such as in deserts), or when an artificial border
6901-433: The mean value of the tilt was 23° 26′ 21.406″ (according to IAU 2006, theory P03), the corresponding value being 23° 26′ 10.633" at noon of January 1st 2023 AD. The main long-term cycle causes the axial tilt to fluctuate between about 22.1° and 24.5° with a period of 41,000 years. Currently, the average value of the tilt is decreasing by about 0.468″ per year. As a result (approximately, and on average),
7004-405: The name for cotton in several Germanic languages, such as German Baumwolle , which translates as "tree wool" ( Baum means "tree"; Wolle means "wool"). Noting its similarities to wool, people in the region could only imagine that cotton must be produced by plant-borne sheep. John Mandeville , writing in 1350, stated as fact that "There grew there [India] a wonderful tree which bore tiny lambs on
7107-400: The new textile industries of the Northeastern United States and northwestern Europe. In 1860 the slogan " Cotton is king " characterized the attitude of Southern leaders toward this monocrop in that Europe would support an independent Confederate States of America in 1861 in order to protect the supply of cotton it needed for its very large textile industry. Russell Griffin of California was
7210-429: The northern hemisphere because astronomic latitude can be roughly measured (to within a few tens of metres) by sighting the North Star . Normally the circles of latitude are defined at zero elevation . Elevation has an effect on a location with respect to the plane formed by a circle of latitude. Since (in the geodetic system ) altitude and depth are determined by the normal to the Earth's surface, locations sharing
7313-425: The other parallels are smaller and centered only on Earth's axis. The Arctic Circle is the southernmost latitude in the Northern Hemisphere at which the Sun can remain continuously above or below the horizon for 24 hours (at the June and December solstices respectively). Similarly, the Antarctic Circle marks the northernmost latitude in the Southern Hemisphere at which the Sun can remain continuously above or below
7416-604: The parallel 36°30′ north and the southern boundaries of Kansas and Colorado on the parallel 37° north created the No Man's Land that later became the Oklahoma Panhandle in 1889. While a significant part of Nevada (containing Las Vegas ) is south of 36°30′, at the time of the admission of Nevada in 1864, it was in the New Mexico Territory. This land was not split off from the new Arizona Territory until 1871, when it
7519-485: The poles the Sun would always circle along the horizon, and at the equator the Sun would always rise due east, pass directly overhead, and set due west. The positions of the Tropical and Polar Circles are not fixed because the axial tilt changes slowly – a complex motion determined by the superimposition of many different cycles (some of which are described below) with short to very long periods. At noon of January 1st 2000 AD,
7622-410: The raw fiber was sent to England for processing. The Indian Mahatma Gandhi described the process: In the United States, growing Southern cotton generated significant wealth and capital for the antebellum South, as well as raw material for Northern textile industries. Before 1865 the cotton was largely produced through the labor of enslaved African Americans. It enriched both the Southern landowners and
7725-604: The region. In the Meroitic Period (beginning 3rd century BCE), many cotton textiles have been recovered, preserved due to favorable arid conditions. Most of these fabric fragments come from Lower Nubia, and the cotton textiles account for 85% of the archaeological textiles from Classic/Late Meroitic sites. Due to these arid conditions, cotton, a plant that usually thrives moderate rainfall and richer soils, requires extra irrigation and labor in Sudanese climate conditions. Therefore,
7828-456: The remaining members of the U.S. Congress wanted Maryland to stay in the Union in order to prevent the national capital city of Washington, D.C. from being surrounded by Confederate states, and hence being cut off from the rest of the Union. If such a thing had happened, then the Federal government would have been forced to move somewhere else further north, such as to Philadelphia . Starting at
7931-651: The rest of Europe. The spinning wheel , introduced to Europe circa 1350, improved the speed of cotton spinning. By the 15th century, Venice , Antwerp , and Haarlem were important ports for cotton trade, and the sale and transportation of cotton fabrics had become very profitable. Under the Mughal Empire , which ruled in the Indian subcontinent from the early 16th century to the early 18th century, Indian cotton production increased, in terms of both raw cotton and cotton textiles. The Mughals introduced agrarian reforms such as
8034-403: The same latitude—but having different elevations (i.e., lying along this normal)—no longer lie within this plane. Rather, all points sharing the same latitude—but of varying elevation and longitude—occupy the surface of a truncated cone formed by the rotation of this normal around the Earth's axis of rotation. Cotton Cotton (from Arabic al-qutn )
8137-504: The scale of ~116 million pounds (53,000 tonnes) annually. In Peru , cultivation of the indigenous cotton species Gossypium barbadense has been dated, from a find in Ancon, to c. 4200 BC , and was the backbone of the development of coastal cultures such as the Norte Chico , Moche , and Nazca . Cotton was grown upriver, made into nets, and traded with fishing villages along
8240-721: The use of cotton in the Old World , dated to 5500 BC and preserved in copper beads, has been found at the Neolithic site of Mehrgarh , at the foot of the Bolan Pass in ancient India , today in Balochistan Pakistan. Fragments of cotton textiles have been found at Mohenjo-daro and other sites of the Bronze Age Indus Valley civilization , and cotton may have been an important export from it. Cotton bolls discovered in
8343-516: The use of pesticides at similar levels to non-Bt cotton and causing less profit for farmers because of the extra expense of GM seeds. However, a 2009 study by the Chinese Academy of Sciences, Stanford University and Rutgers University refuted this. They concluded that the GM cotton effectively controlled bollworm. The secondary pests were mostly miridae (plant bugs) whose increase was related to local temperature and rainfall and only continued to increase in half
8446-442: The villages and then taken to towns in the form of yarn to be woven into cloth textiles, was advanced by the diffusion of the spinning wheel across India shortly before the Mughal era, lowering the costs of yarn and helping to increase demand for cotton. The diffusion of the spinning wheel, and the incorporation of the worm gear and crank handle into the roller cotton gin, led to greatly expanded Indian cotton textile production during
8549-500: The villages studied. Moreover, the increase in insecticide use for the control of these secondary insects was far smaller than the reduction in total insecticide use due to Bt cotton adoption. A 2012 Chinese study concluded that Bt cotton halved the use of pesticides and doubled the level of ladybirds, lacewings and spiders. The International Service for the Acquisition of Agri-biotech Applications (ISAAA) said that, worldwide, GM cotton
8652-535: The war. The Lancashire Cotton Famine prompted the main purchasers of cotton, Britain and France , to turn to Egyptian cotton. British and French traders invested heavily in cotton plantations. The Egyptian government of Viceroy Isma'il took out substantial loans from European bankers and stock exchanges. After the American Civil War ended in 1865, British and French traders abandoned Egyptian cotton and returned to cheap American exports, sending Egypt into
8755-413: The world's arable land . India is the world's largest producer of cotton. The United States has been the largest exporter for many years. There are four commercially grown species of cotton, all domesticated in antiquity: Hybrid varieties are also cultivated. The two New World cotton species account for the vast majority of modern cotton production, but the two Old World species were widely used before
8858-571: The world, economies that rely on it face difficulties and conflict, as well as potential environmental problems. For example, improper cropping and irrigation practices have led to desertification in areas of Uzbekistan , where cotton is a major export. In the days of the Soviet Union , the Aral Sea was tapped for agricultural irrigation, largely of cotton, and now salination is widespread. Cotton can also be cultivated to have colors other than
8961-544: The world, including the Americas, Africa, Egypt and India. The greatest diversity of wild cotton species is found in Mexico, followed by Australia and Africa. Cotton was independently domesticated in the Old and New Worlds. The fiber is most often spun into yarn or thread and used to make a soft, breathable , and durable textile . The use of cotton for fabric is known to date to prehistoric times; fragments of cotton fabric dated to
9064-517: The world. A long-term study on the economic impacts of Bt cotton in India, published in the Journal PNAS in 2012, showed that Bt cotton has increased yields, profits, and living standards of smallholder farmers. The U.S. GM cotton crop was 4.0 million hectares in 2011 the second largest area in the world, the Chinese GM cotton crop was third largest by area with 3.9 million hectares and Pakistan had
9167-445: The year. These circles of latitude can be defined on other planets with axial inclinations relative to their orbital planes. Objects such as Pluto with tilt angles greater than 45 degrees will have the tropic circles closer to the poles and the polar circles closer to the equator. A number of sub-national and international borders were intended to be defined by, or are approximated by, parallels. Parallels make convenient borders in
9270-523: The yellowish off-white typical of modern commercial cotton fibers. Naturally colored cotton can come in red, green, and several shades of brown. The water footprint of cotton fibers is substantially larger than for most other plant fibers. Cotton is also known as a thirsty crop; on average, globally, cotton requires 8,000–10,000 liters of water for one kilogram of cotton, and in dry areas, it may require even more such as in some areas of India, it may need 22,500 liters. Genetically modified (GM) cotton
9373-471: Was GM in 2009 making Australia the country with the fifth largest GM cotton crop in the world. Other GM cotton growing countries in 2011 were Argentina, Myanmar, Burkina Faso, Brazil, Mexico, Colombia, South Africa and Costa Rica. Cotton has been genetically modified for resistance to glyphosate a broad-spectrum herbicide discovered by Monsanto which also sells some of the Bt cotton seeds to farmers. There are also
9476-547: Was a source of income for families across the South. Rural and small town school systems had split vacations so children could work in the fields during "cotton-picking." During the middle 20th century, employment in cotton farming fell, as machines began to replace laborers and the South's rural labor force dwindled during the World Wars. Cotton remains a major export of the United States, with large farms in California, Arizona and
9579-459: Was developed to reduce the heavy reliance on pesticides. The bacterium Bacillus thuringiensis (Bt) naturally produces a chemical harmful only to a small fraction of insects, most notably the larvae of moths and butterflies , beetles , and flies , and harmless to other forms of life. The gene coding for Bt toxin has been inserted into cotton, causing cotton, called Bt cotton , to produce this natural insecticide in its tissues. In many regions,
9682-495: Was given to Nevada by the Federal government. The Compromise of 1850 made no attempt to divide California along the line of 36°30′, or to allow slavery south of it; the social and political conditions created by the California Gold Rush ruled out any such idea, and California was admitted to the union as a free state. During the American Civil War (1861–65), all of the states located wholly south of 36°30′ north joined
9785-401: Was grown by Chinese peoples in the southern Chinese province of Yunnan . Egyptians grew and spun cotton in the first seven centuries of the Christian era. Handheld roller cotton gins had been used in India since the 6th century, and was then introduced to other countries from there. Between the 12th and 14th centuries, dual-roller gins appeared in India and China. The Indian version of
9888-418: Was imported from India without tariffs to British factories which manufactured textiles from Indian cotton, giving Britain a monopoly over India's large market and cotton resources. India served as both a significant supplier of raw goods to British manufacturers and a large captive market for British manufactured goods. Britain eventually surpassed India as the world's leading cotton textile manufacturer in
9991-451: Was invented in India during the early Delhi Sultanate era of the 13th–14th centuries, came into use in the Mughal Empire some time around the 16th century, and is still used in India through to the present day. Another innovation, the incorporation of the crank handle in the cotton gin, first appeared in India some time during the late Delhi Sultanate or the early Mughal Empire. The production of cotton, which may have largely been spun in
10094-443: Was no punishment for continuing to sell cotton cloth, smuggling of the popular material became commonplace. In 1721, dissatisfied with the results of the first act, Parliament passed a stricter addition, this time prohibiting the sale of most cottons, imported and domestic (exempting only thread Fustian and raw cotton). The exemption of raw cotton from the prohibition initially saw 2 thousand bales of cotton imported annually, to become
10197-547: Was one of the sources of wealth for Meroë. Ancient Nubia had a "culture of cotton" of sorts, evidenced by physical evidence of cotton processing tools and the presence of cattle in certain areas. Some researchers propose that cotton was important to the Nubian economy for its use in contact with the neighboring Egyptians. Aksumite King Ezana boasted in his inscription that he destroyed large cotton plantations in Meroë during his conquest of
10300-422: Was planted on an area of 25 million hectares in 2011. This was 69% of the worldwide total area planted in cotton. GM cotton acreage in India grew at a rapid rate, increasing from 50,000 hectares in 2002 to 10.6 million hectares in 2011. The total cotton area in India was 12.1 million hectares in 2011, so GM cotton was grown on 88% of the cotton area. This made India the country with the largest area of GM cotton in
10403-400: Was put on Parliament, by the new mill owners, to remove the prohibition on the production and sale of pure cotton cloth, as they could easily compete with anything the EIC could import. The acts were repealed in 1774, triggering a wave of investment in mill-based cotton spinning and production, doubling the demand for raw cotton within a couple of years, and doubling it again every decade, into
10506-592: Was responsible for a large part of the empire's international trade. India had a 25% share of the global textile trade in the early 18th century. Indian cotton textiles were the most important manufactured goods in world trade in the 18th century, consumed across the world from the Americas to Japan . The most important center of cotton production was the Bengal Subah province, particularly around its capital city of Dhaka . The worm gear roller cotton gin , which
10609-456: Was time-consuming and expensive. This, coupled with the emergence of American cotton as a superior type (due to the longer, stronger fibers of the two domesticated native American species, Gossypium hirsutum and Gossypium barbadense ), encouraged British traders to purchase cotton from plantations in the United States and in the Caribbean . By the mid-19th century, " King Cotton " had become
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