The Lousiana Purchase
nearly tripled the size fo the united states.
improved relations between the united states and britain.
set the border between the united states and canada at the forth-ninth parallel.
nearly doubled the size of the united states.

nearly doubled the size of the united states.

the

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.