What two things established by Article 1 of the constitution?

Article 1 of the U.S. Constitution gives Congress its powers and limits. Congress is the legislative branch of the government, meaning they are the ones to make laws for the United States of America. The article also creates the two sections of Congress, which is called a bicameral legislature.

Explanation:

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.