Read the excerpt from the Constitution of the United States, Article 1, Section 8. [Congress shall have power] to regulate Commerce with foreign Nations, and among the several States.

This excerpt reinforces the idea of

can confirm correct.  a. federal supremacy

Explanation:

i think it would be reparing roads  

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.