Final answer:
President Roosevelt passed the Indian Reorganization Act in 1933, which aimed to improve the lives of Native Americans by promoting local self-governance and preserving their customs and heritage.
Step-by-step explanation:
In 1933, President Roosevelt attempted to address the injustices done to Native Americans and passed the Indian Reorganization Act (also known as the "Indian New Deal"). This significant legislation marked a departure from previous policies that sought to assimilate Native Americans into American culture. Instead, the Indian Reorganization Act focused on promoting the development of local self-government for tribes, preserving Native American artifacts and heritage, and reversing some of the damages of past policies. Under the leadership of John Collier, the Commissioner on Indian Bureau Affairs, the act facilitated the return of nearly two million acres of land to various tribes and supported the establishment of tribal self-governance.