Federated state of the USA (181,186 km 2 with 3,642,361 inhabitants in 2008), in the southern part of the Prairie area between the river Arkansas to the northeast and the Red River to the S; the capital City of Oklahoma (551.789 residents in 2008) rises on the North Canadian River, almost at the topographical center of the state, of which it is the main city in terms of population, economy and cultural life; headquarters of the oil, chemical, aeronautical, mechanical, electrical, textile, food, wood and publishing industries.
According to abbreviationfinder, the eastern section of the Oklahoma is dominated by the Ozark Mountains and the Ouachita Mountains. In the southern part rise the Arbuckle Mountains (427 m), then the Table Hills and further to the O the Mountains Wichita. The north-western part of the state is instead made up of a large plateau, which is part of the Great Plains Region, extended to the east of the Rocky Mountains. The climate is subtropical, humid, with hot summers and mild winters; rainfall varies from 1000 mm per year in the eastern section to 400 mm in the western one. The rivers have a predominantly NW-SE direction and are tributaries of the Mississippi : the largest are Arkansas, with the great Cimarron and Canadian tributaries, and the Red River. The economy is based on agriculture, livestock and, above all, on the exploitation of the subsoil (oil, natural gas, coal, copper, silver). The development of the petrochemical industry has favored urbanization and, together with the availability of electricity, the rise of textile, mechanical and chemical industries. Important cities, in addition to the capital, are Tulsa, Midwest City and Lawton.
Reached in 1541 by Francisco Vázquez de Coronado, the territory during the 18th century. it was disputed to Spain by the French, who ceded it to the USA with the Louisiana Purchase in 1803. Inhabited by a tribe of nomadic Indians, from 1828 it was designated by Congress as a reserve (Indian Territory). The Civil War broke out (1861), the Cherockee, Choctaw, Creek, Chickasaw and Seminole, coming from the south, where they owned plantations and slaves, they signed treaties to unite the Indian Territory to the Confederation; for this reason, at the end of the conflict, the federal government deprived them of the western part of the region, open since 1889 to the settlement of the Whites (Territory of the Oklahoma). After the whole region was opened to the Whites (1904), the two territories were united and admitted as a state to the Union (1907).
Oklahoma has great agricultural importance: the number of farms has risen from 108,000 in 1900 to 206,866 in 1930. Their acreage represents 76.1% of the area of the state. The main agricultural productions are corn and wheat; but the good thermal conditions allowed the development of cotton growing, whose production increased from 957,000 bales in the period 1911-1915 to 1,202,000 in the years 1926-1930. The breeding, favored by a good forage production, in 1933 consisted of 439,000 horses, 276,000 mules, 2,280,000 cattle of which 920,000 dairy (in significant increase), 201,000 sheep and 1,506,000 pigs. But Oklahoma, alongside agriculture, has come to take on enormous importance from the mining point of view: in 1930, 41,286 people were employed in quarries and mines. It occupies the second place in the Confederation for oil, whose production has risen dramatically employing a total, in 1930, 26,617 people: 30.5 million hectoliters per year in the period 1901-1910; 377 million for the years 1926-1930. The production of natural gas is also enormous.
Coal follows in importance, produced for 3.4 million metric tons in the period 1911-1915; for 3.06 in the years 1926-1930; the area of greatest production is the central-eastern section of the state. In 1930, 5391 people were employed in the extraction. Zinc production is also very important (3206 people employed), especially in Ottawa County, which continues the Joplin area in contiguous Missouri. The production of lime and building stones, gypsum, etc. follows.
In 1930, 828,000 people over the age of 10 were employed in various economic activities, of which 37% in agriculture, 5% in mines, 17% in crafts and industries, 19% in commerce and in communications. As far as large industry is concerned, the workers employed rose from 2381 in 1899 to 29,503 in 1919, to 31,695 in 1929 to drop to 22,576 in 1931.
In terms of number of workers and production value, the oil refining industry undoubtedly occupies the first place (75 workers in 1909, 4612 in 1919, 5164 in 1929; the value of production rises from 1 million dollars in 1909 to 183.7 million dollars in 1929); this is followed by the processing of zinc (1406 workers), timber (2883 employees), foundries (1973 workers), construction and mechanical repairs (vehicles, etc.) with 2283 workers, etc.
According to countryaah, Oklahoma has the following main cities:
The most populous city and capital of the state of Oklahoma (United States), on the North Canadian River, founded in 1889. It has an average annual temperature of 15 ° (winter 3 °, 3, summer 25 °, 6); the difference between absolute minimums (-27 °, 2) and absolute maximums (+ 40 °) is significant; rainfall is around 800 mm, with highs in spring. Snow is scarce (192 mm. Per year). The population of the center has increased dramatically, rising from 4151 inhabitants in 1890 to 10,037 in 1900, to 64,205 in 1910, to 91,295 in 1920, to 185,389 in 1930 (numerous aggregations of neighboring towns). Indigenous Whites in 1930 accounted for 83.2% of the total population; the Whites born to foreign parents at 6.3%; 1.7% of whites born abroad (3143 individuals, of which 673 Germans, 447 English, Scottish, etc .; Italians only 38);