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1940s military operation that supplied West Berlin with food and other vital goods by air after the Soviet Union blockaded the city -
created in 1949 by the United States, Canada, and several Western European nations to provide collective security against the Soviet Union. -
conflict between the Democratic People's Republic of Korea (North Korea) and the Republic of Korea (South Korea) in which at least 2.5 million persons lost their lives. -
a collective defense treaty established by the Soviet Union and seven other Soviet satellite states in Central and Eastern Europe: Albania, Bulgaria, Czechoslovakia, East Germany, Hungary, Poland, and Romania -
was a long, costly and divisive conflict that pitted the communist government of North Vietnam against South Vietnam and its principal ally, the United States. -
the first artificial satellite was successfully placed in orbit around the Earth -
the Wall completely cut off West Berlin from surrounding East Germany and from East Berlin until government officials opened it in November 1989. -
leaders of the U.S. and the Soviet Union engaged in a tense, 13-day political and military standoff -
On July 20, 1969, American astronauts Neil Armstrong (1930-2012) and Edwin "Buzz" Aldrin (1930-) became the first humans ever to land on the moon. -
It was on 9 November 1989, five days after half a million people gathered in East Berlin in a mass protest, that the Berlin Wall dividing communist East Germany from West Germany crumbled.