Compact of 1802

 The Compact of 1802, formally Articles of Agreement and Cession, was a compact between the United States of America and the state of Georgia entered into on April 24, 1802. In it, the United States paid Georgia 1.25 million U.S. dollars for its central and western lands (the Yazoo lands, now Alabama and Mississippi, respectively), and promised that the U.S. government would extinguish American Indian land titles in Georgia.

https://en.wikipedia.org/wiki/Compact_of_1802