Which present state was once known officially as Indian Territory
Indian Territory the approximate boundaries of the current state of Oklahoma by the Kansas–Nebraska Act of 1854, which created Kansas Territory and Nebraska Territory. The key boundaries of the territories were: Kansas became a state in 1861, and Nebraska became a state in 1867. In 1890 the Oklahoma Organic Act created Oklahoma Territory out of the western part of Indian Territory, in anticipation of admitting both Indian Territory and Oklahoma Territory as a future single State of Oklahoma. At the beginning of the Civil War, Indian Territory had been essentially reduced to the boundaries of the present-day U.S. state of Oklahoma, and
Indian Territory by citizens residing in the territory. One elected representative was allowed a seat in the U. S. House of Representatives. The federal government took responsibility for territorial affairs. Later, the inhabitants of the territory could apply for admission as a full state. No such action was taken for the so-called Indian Territory, so that area was not treated as a legal territory. The reduction of the land area of Indian Territory (or Indian Country, as defined in the Indian Intercourse Act of 1834), the successor of Missouri Territory began almost immediately after its creation with: Indian Country was reduced to