What accounts for why the soviet union decided to formalize its east european alliance through the warsaw pact?
a. to convince the world that communism was the best choice
b. to pay off a debt to the allies and the empire of japan
c. to create a counter-balance to the nato alliance
d. to threaten the recalcitrant countries of the east

West Germany was accepted into NATO and re-militarized, Which threatened the Soviet Union. So, the Soviet Union formalized its East European alliance with the Warsaw Pact. This created a counter-balance to the NATO alliance

the second significant cause of the great migration was the desire of black southerners to escape segregation, known euphemistically as jim crow. rural african american southerners believed that segregation - and racism and prejudice against blacks - was significantly less intense in the north.

four sitting presidents have been assassinated while in office but the first was abraham lincoln,