Which of the following trends that started in early civilizations became stronger in classical civilizations?
a. the isolation of distant city-states from one another
b. the establishment and rapid growth of permanent settlements
c. the political control exercised by religious leaders
d. the reliance of the population on military conquest to provide food

The establishment and rapid growth of permanent settlements

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.

b: to eliminate competition from other farmers