After the civil war, which half of indian territory did the native americans have to give up?

He then forced upon the Indians a treaty whereby they surrendered to the United States over twenty-million acres of their traditional land—about one-half of present day Alabama and one-fifth of Georgia. Working on behalf of white settlers who wanted to grow cotton on the Indians' land, the federal government forced them to leave their homelands and walk hundreds of miles to a specially designated “Indian territory” across the Mississippi River.

Explanation:

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