Answer:
Federal concern for tribal sovereignty was part of an effort on the government’s part to end its control of, and obligations to, Indian tribes. In the 1960s, a modern Native American civil rights movement, inspired by the African American civil rights movement, began to grow.
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Cesar Chavez led the successful boycotts of fruits and vegetables to put pressure on California growers to sign union contracts.
The world had just seen the largest and most destructive war that the world at that time had seen, going back to the way things were prewar appealed to Americans. hope this helps :D