During the Early Years of the United States, What Happened

During the early years of the United States, what happened to many Native American tribes?

A) They embraced Revolutionary ideology and assumed roles of equality in white society.
B) They experienced a social, demographic, and political crisis.
C) They grew in power and strength.
D) They moved to reservations, where their privacy and safety was to be guaranteed by the federal government.
E) They experienced a revival of their traditional cultures.