JentooUS History

AP® United States History · Unit 8 · Topic 8.2

Berlin, NATO, and the Two Blocs

Berlin sat deep inside Soviet-controlled East Germany but was split among the four WWII allies, so when the USSR blockaded it in 1948 the US and Britain answered with a massive airlift instead of war, and Europe soon hardened into two rival alliances, NATO and the Warsaw Pact.

Watch it drawn3 questionsPractice

After World War II, Germany and its capital Berlin were each split into four occupation zones run by the US, Britain, France, and the Soviet Union. Berlin became a Western island sitting 100 miles inside Soviet-controlled East Germany. In 1948, Stalin cut off all road, rail, and canal access to West Berlin, betting that the Western powers would either abandon the city or start a war trying to reach it. Instead the US and Britain chose a third option: flying in everything the city needed. The Berlin Airlift ran for nearly a year, with planes landing around the clock, until Stalin lifted the blockade in May 1949.

The standoff showed both sides the shape the Cold War would take: proxy pressure and resource commitment, not direct combat between superpowers. That lesson got written into institutions almost immediately. In April 1949 the US, Canada, and ten Western European nations formed NATO, pledging that an attack on one member was an attack on all. The Soviet Union answered in 1955 with the Warsaw Pact, binding Eastern Europe into its own defense bloc. Europe now had a line running through its middle, armed on both sides.

That line became concrete, literally, in 1961. East Germans had been fleeing west through Berlin for years, draining the East of workers. The Berlin Wall went up overnight to seal the border, turning West Berlin into a walled-off capitalist outpost and making the division of Europe a permanent, visible fact rather than just a diplomatic one.

Key terms

Berlin Airlift
The 1948-1949 US and British operation flying food and fuel into blockaded West Berlin instead of forcing open ground routes.
NATO
The 1949 mutual defense alliance of the US, Canada, and Western European nations against Soviet expansion.
Warsaw Pact
The 1955 Soviet-led military alliance binding Eastern European communist states together.
Berlin Wall
The barrier East Germany built in 1961 to stop emigration to the West, physically dividing the city.

Watch it explained

  1. How it worksWalk me through the Berlin airlift as a flight schedule feeding two million people by air.
  2. How it worksDraw the NATO and Warsaw Pact blocs on a map and show where the line runs.
  3. Going furtherWhat happens to the standoff once the Berlin Wall goes up in 1961?

Check yourself

Your turn1 of 2
When the Soviet Union blockaded all ground routes into West Berlin in 1948, cutting off supplies to the city's population, the United States and Britain responded by flying in food, fuel, and other necessities around the clock for nearly a year rather than either abandoning the city or engaging in direct military confrontation. What did this specific response most directly demonstrate?

End of topic.

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