Across
- 4. originally, the group of nations that had recently gained independence from colonial rule and were not aligned with the West (First World) or the East (Second World) after World War II; more broadly, the developing nations of the world
- 5. a hydrogen bomb, or a bomb created by fusing atoms; more powerful than an atomic bomb, a weapon of mass destruction that the United States first tested in 1952 as part of the arms race
- 7. as part of the Cold War and in response to the formation of the North Atlantic Treaty Organization, an agreement signed in 1955 by the Soviet Union, Albania, Bulgaria, Czechoslovakia, East Germany, Hungary, Poland, and Romania to establish a military alliance for mutual defense
Down
- 1. the Soviet blockade of the German city of Berlin, implemented from 1948 to 1949 to halt land travel into the city in hopes of forcing the United States, Great Britain, and France to give up their plan to combine their occupation zones into a single, democratic West German state; the Allied nations resisted the blockade by airlifting food and supplies into Berlin
- 2. during the arms race between the United States and the Soviet Union, the principle that either side would respond to a nuclear attack by launching its own missiles, which helped prevent the Cold War from becoming a hot war
- 3. a war fought on the Korean Peninsula from 1950 to 1953 after troops from communist North Korea, armed with Soviet weapons, invaded democratic South Korea, prompting the United States and the United Nations to send forces to support South Korea and fight to unify the Korean Peninsula into one democratic nation, which in turn prompted China to join the war on North Korea's side; at war's end, the peninsula remained divided into two nations
- 6. as part of the Cold War, a military alliance formed in 1949 among the United States, Canada, France, Luxembourg, Belgium, the Netherlands, Iceland, Italy, Britain, Denmark, Norway, and Portugal—and expanded to include Greece and Turkey in 1952 and West Germany in 1955—to establish collective security against the Soviet Union
