How did the US policy toward Native Anericans change in the 1920s?

In the 1920s, U.S. policy toward Native Americans began to shift from assimilationist approaches to a focus on self-determination and tribal sovereignty. The Indian Citizenship Act of 1924 granted U.S. citizenship to all Native Americans, although many states found ways to keep them from voting. Additionally, the Indian Reorganization Act of 1934, though enacted slightly later, was influenced by the 1920s' shift, promoting tribal self-governance and the preservation of cultural identities. This marked a significant change from previous policies aimed at eradicating Native cultures.