How did einstein's theory of relativity change the way people thought about the universe?

The answer is: It made people think they lived in an universe that might not be fully understood.

answer; (d) i believe that the correct answer is americans finally ran out of ammunition;

as general terms,  indian territory,  the indian territories, or  indian country  describe an evolving land area set aside by the  united states government  for the relocation of  native americans  who held  aboriginal title  to their land. in general, the tribes ceded land they occupied in exchange for  land grants  in 1803. the concept of an indian territory was an outcome of the 18th- and 19th-century policy of  indian removal. after the  civil war(1861–1865), the policy of the government was one of  assimilation.