The action that has come to symbolize the end of the Cold War is 3. tearing down the Berlin Wall. The Wall had been formed by the Soviet Union to separate East Berlin (Soviet-controlled) from West Berlin (Western-controlled). Its fall allowed Berliners (and Germans) from the Eastern half finally make their way to the Western half.
Answer:
A. OKC Bombing
Explanation:
A domestic terrorism attack is an attack that was caused by the citizen of that country.
I think the Ancient Greek was the first one.