What tools did the us and the soviet union use to accomplish their power goals in europe?

Military Advancement and better use of technology.

Explanation:

Relationships between the U.S and the Soviet Union was a complex change of political, ideological and economic, led to changes among careful collaboration and frequently hostile power rivalry over the years. The political differences of these two countries often stopped them from leading a mutual agreement on issues, as in the case in the Cuban missile crisis, brought them close to the war.  

The U.S. has always been against the communism and Soviet have used his influences in Europe. Both these nations have advance technology and military advancement in the nuclear weapon and missile race in which they were able to show their position in  Europe.

the roman empire began to fall

the answer is a. the harappan civilisation is also called the indus valley civilisation, this is because they built their cities along the indus river. the reason behind this location can be found in the rest of the "old world" civilisations like mesopotamia or egypt, the first built their cities along the rivers tigris and euphrates, the second along the nil; : their respective civilisations thrived because the overflowing of their respective rivers produced favorable conditions for agriculture, their main support.