Fill in the Blanks Reasons for ContainmentOnline version Content Statement 23 by Jefferson County ESC 1 Cuban Cold communist Nuclear Castro Soviets Vietnam One of the earliest " hot spots " in the War was in the European city of Berlin . After World War II , the city was divided between the United States , Soviet Union , France , and Great Britain . From 1948 to 1949 the city was blockaded by the , leading to the Berlin Air Lift , in which the US and its allies provided their areas with food and supplies to outlast the blockade . The Caribbean also was an important Cold War hot spot . In April of 1961 , the United States launched the Bay of Pigs invasion . Over 1 , 400 exiles attempted to overthrow the Communist government led by Fidel , but were unsuccessful . In October of the following year , the Cuban Missile Crisis led to a showdown between the U . S . and Soviet Union . war was narrowly averted when the nuclear weapons were withdrawn . From the mid - 1950s to the mid - 1970s , the United States also attempted to prevent the spread of Communism in . Northern forces led by Ho Chi Minh attempted to unify the southern part of the country under a government . The United States' efforts - including over 500 , 000 troops at one point - proved unsuccessful . The U . S . withdrew its last troops from the southern part of the country in March of 197 3
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