Question: Basil LeFlore was governor of the Choctaw nation after it moved to what U.S. temporary land area?

Context articles: Wheelock Academy
Treaty of Dancing Rabbit Creek
Choctaw Nation of Oklahoma
Red Shoes (Choctaw chief)
Greenwood LeFlore
Basil LeFlore
Indian Territory
Choctaw Trail of Tears
Choctaw in the American Civil War
McCurtain County, Oklahoma

Wheelock Academy was the model academy for the five civilized tribes' academies.
 It was started as a missionary school for Choctaw girls, and is still owned by the Choctaw nation.
 The school closed in 1955 and the only remaining Choctaw school Jones Academy became coeducational.
 The site is located 3 miles east of Millerton in McCurtain County, Oklahoma.
 It is owned by the Choctaw Nation and is administered by the Bureau of Indian Affairs.
The Treaty of Dancing Rabbit Creek was a treaty signed on September 27, 1830, and proclaimed on February 24, 1831, between the Choctaw American Indian tribe and the United States Government.
 This was the first removal treaty carried into effect under the Indian Removal Act.
 The treaty ceded about 11 million acres (45,000 km) of the Choctaw Nation in what is now Mississippi in exchange for about 15 million acres (61,000 km) in the Indian territory, now the state of Oklahoma.
 The principal Choctaw negotiators were Chief Greenwood LeFlore, Musholatubbee, and Nittucachee; the U.S. negotiators were Colonel John Coffee and Secretary of War John Eaton.
The Choctaw Nation of Oklahoma (commonly referred to as the Choctaw Nation) is a federally recognized Native American tribe with a tribal jurisdictional area comprising twelve tribal districts.
 The Choctaw Nation maintains a special relationship with both the United States and Oklahoma governments.
Red Shoes was a Choctaw chief who dared to travel through Creek territory, despite the Creeks warning to the Choctaw Nation pinned down in Louisiana when a meeting of Indian chiefs was announced in South Carolina in the 1740s.
 Thus ensuring the survival of the Choctaw Nation by obtaining British supply lines.
 As the Choctaw were under siege from Creeks and unable to get defensive supplies from the famished French settlements.
 The French countered by arranging the assassination of Red Shoes.
 He was known in French as "le Soulier Rouge".
 He is also known as "Red Moccasin".
Greenwood LeFlore or Greenwood Le Fleur (June 3, 1800 – August 31, 1865) was elected Principal Chief of the Choctaw in 1830 before removal.
 Before that, the nation was governed by three district chiefs and a council of chiefs.
 A wealthy and regionally influential Choctaw of mixed-race, who belonged to the Choctaw elite due to his mother's rank, LeFlore had many connections in state and federal government.
 In 1830 LeFlore led other chiefs in signing the Treaty of Dancing Rabbit Creek, which ceded the remaining Choctaw lands in Mississippi to the US government and agreed to removal to Indian Territory.
 It also provided that Choctaw who chose to stay in Mississippi would have reserved lands, but the United States government failed to follow through on this provision.
Basil LeFlore (born near Carrollton, Mississippi, in 1811; died in Goodland, Indian Territory, 15 October 1886) was governor of the Choctaw nation after it removed to Indian Territory.
 He served from 1860 to 1875.
 He later was auditor until his death.
As general terms, Indian Territory, the Indian Territories, or Indian country describe an evolving land area set aside by the United States Government for the relocation of Native Americans who held aboriginal title to their land.
 In general, the tribes ceded land they occupied in exchange for land grants in an area purchased by the United States federal government from Napoleonic France, the Louisiana Purchase.
 The concept of an Indian Territory was an outcome of the 18th- and 19th-century policy of Indian removal.
 After the Civil War, the policy of the government was one of assimilation.
The Choctaw Trail of Tears was the relocation of the Choctaw Nation from their country referred to now as the Deep South (Alabama, Arkansas, Mississippi, and Louisiana) to lands west of the Mississippi River in Indian Territory in the 1830s.
 A Choctaw miko (chief) was quoted by the Arkansas Gazette that the removal was a "trail of tears and death."
 After removal the Choctaws became three distinct groups, the Choctaw Nation of Oklahoma, Jena Band of Choctaw Indians, and the Mississippi Band of Choctaw Indians.
The Choctaw in the American Civil War participated in two major arenas— the Trans-Mississippi and Western Theaters.
 The Trans-Mississippi had the Choctaw Nation.
 The Western had the Mississippi Choctaw.
 The Choctaw Nation had removed West prior to the War.
 But, the Mississippi Choctaw had elected to remain in the East.
 Both the Choctaw Nation and the Mississippi Choctaw would ultimately side with the Confederacy.
McCurtain County is located in the southeastern corner of the U.S. state of Oklahoma.
 As of the 2010 census, the population was 33,151.
 Its county seat is Idabel.
 It was formed at statehood from part of the earlier Choctaw Nation in Indian Territory.
 The name honors an influential Choctaw family that lived in the area.
 Green McCurtain was the last chief when the Choctaw Nation was dissolved before Oklahoma became a state in 1907.