Tax? Dunno if it's what ur looking for.
The correct answer is B) Twenty-first .
Prohibition was supposed to be a constitutional amendment that would help America to be a less violent, morally sound country. However, this law just had the opposite effect. Violence increased during this time as rival gangs competed to sell illegal alcohol to millions of Americans over the course of a decade. Realizing that Prohibition was not working, the US government developed the 21st amendment in order to get rid of the 18th amendment.
An option to consider is, Persia.
2 is the answer to your question.
Immediate conflicts:
... The USA had atomic weapons and the USSR did not. (The US would not share that technology with the Soviets.)
... The USSR did not assure that free and fair elections took place in Eastern Europe -- it saw to it that Soviet-aligned governments were installed there.
... Tensions over the East Germany / West Germany and East Berlin / West Berlin division of territory.
Deeper causes:
The USA was committed to capitalism and democratic institutions of government.
The USSR was committed to communism and imposed authoritarian government.
The Cold War was mostly a tension between these worldviews.
