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It was one of the first major crisis during the cold war -
The foundations of the North Atlantic Treaty Organization were officially laid down with the signing of the North Atlantic Treaty, more popularly known as the Washington Treaty. -
It was fought between north Korea and south Korea -
It was a collective defense treaty signed in Warsaw, Poland between the soviet union and 7 other eastern bloc socialist -
It was the second of the Indochina wars and was fought between north Vietnam and south Vietnam -
It was the first artificial satellite -
Berlin Wall was to keep so-called Western fascists from entering East Germany -
It was a confrontation between the United States and soviet union -
Arrival of a spacecraft on the surface of the moon -
People from both borders could switch sides and go where they want