forced removal; the modern Seminole Nation of Florida is descended from these individuals. A small number of non-Indians who lived with the nations, including over 4,000 slaves and others of African descent such as spouses or Freedmen, also accompanied the Indians on the trek westward. By 1837, 46,000 Indians from the southeastern states had been removed from their homelands, thereby opening for white settlement. When the "Five Tribes" arrived in Indian Territory, "they followed their physical appropriation of Plains Indians' land with an erasure of their predecessor's history", and "perpetuated the idea that they had found an undeveloped 'wilderness" when they arrived" in an attempt to appeal to white American values by participating in the settler colonial process themselves. Other Indian nations, such as the Quapaws and Osages had moved to Indian Territory before the "Five Tribes" and saw them as intruders. Historical background Before 1838, the fixed boundaries of these autonomous Indian nations, comprising large areas of the United States, were subject to continual cession and annexation, in part due to pressure from squatters and the threat of military force in the newly declared U.S. territories—federally administered regions whose boundaries supervened upon the Indian treaty claims. As these territories became U.S. states, state governments sought to dissolve the boundaries of the Indian nations within their borders, which were independent of state jurisdiction, and to expropriate the land therein. These pressures were exacerbated by U.S. population growth and the expansion of slavery in the South, with the rapid development of cotton cultivation in the uplands after the invention of the cotton gin by Eli Whitney. Many people of the southeastern Indian nations had become economically integrated into the economy of the region. This included the plantation economy and the possession of slaves, who were also forcibly relocated during the removal. Prior to Jackson's presidency, removal policy was already in place and justified by the myth of the "vanishing Indian". Historian Jeffrey Ostler explains that "Scholars have exposed how the discourse of the vanishing Indian was an ideology that made declining Indigenous American populations seem to be an inevitable consequence of natural processes and so allowed Americans to evade moral responsibility for their destructive choices". Despite the common association of Andrew Jackson and the Trail of Tears, ideas for Removal began prior to Jackson's presidency. Ostler explains, "A singular focus on Jackson obscures the fact that he did not invent the