The United States acquired all of Florida in the Adams-Onís Treaty because it agreed to give up its claims on Mexico.
Texas.
the Oregon Country.
Canada.

the claims on Texas is the answer

to reform the distraught soviet union, the democratization of the communist party was promoted through party secretary mikhail gorbachev's policies of “perestroika” and “glasnost.” perestroika refers to the reconstruction of the political and economic system established by the communist party.