What ceded more than 7.5 million acres of Choctaw land to the state of Mississippi?

Between 1801 and 1830, when the Treaty of Dancing Rabbit Creek was signed, the Choctaw ceded more than 23 million acres to the United States. At the time of the Treaty signing in 1830, there were more than 19,000 Choctaws in Mississippi.

Explanation:

in 1803 the louisiana purchase took place, doubling the size of the country. by 1840 almost 7 million americans had migrated westward in hopes of securing land and being prosperous. the belief that settlers were destined to expand to the west is often referred to as manifest destiny.

explanation:

i think it's a)sparta