Why did Native Americans not want to five up their lands

which time period is this? or is this story fictional, i'm going to need more info to answer this question

lincoln presided over the union victory in the american civil war, which dominated his presidency. a former whig, lincoln ran on a political platform opposed to the expansion of slavery in the territories. his election served as the immediate impetus for the outbreak of the american civil war.

thomas jefferson is the answer

the answer would be c