Question: what was the most significant event during the cold war?
Answer: berlin airlift. In June 1948 the U.S. and Britain announced a proposal for establishing a new currency, the Deutschmark, into West Berlin. ... 
u-2 incident. ... 
cuban missile crisis. ... 
vietnam war. ... 
Soviet Afghan war. ... 
korean war. ... 
sputnik crisis. ... 
non-proliferation treaty.