How did the Declaration of Indian Purpose help the cause of American Indians in 1961?

The Declaration of Indian Purpose, issued in 1961 by a group of Native American leaders during a conference in Chicago, articulated the rights and aspirations of American Indians, asserting their sovereignty and the need for self-determination. It highlighted issues such as poverty, discrimination, and the loss of land, calling for increased federal support and recognition of tribal autonomy. By uniting various tribes and fostering a collective identity, the declaration galvanized activism and laid the groundwork for future movements, including the American Indian Movement (AIM) in the late 1960s and early 1970s. Its impact was significant in shifting public perception and policy regarding Native American rights.