During the cold war many countries joined the non-aligned movement in order to:
(apex)

avoid being dominated by either the united states or the soviet union

avoid being dominated by either the United States or the Soviet Union.

Explanation:

The Non-Aligned Movement was done by countries to try and keep their political neutrality in the Cold War. The meeting in Belgrade in 1961 made the principles regarding their cooperation and internal politics. Some of those principles would be to respect the sovereignty and territorial integrity of all nations or abstention from intervention or interference in the internal affairs of another country.

the answer should be a. the sui empire, the tang empire extended from korea in the west to manchuria in the east.

a stronger central government  

its what they are