How did the united states respond to the crisis in west berlin in 1948–1949?
a. it withdrew its armed forces from west berlin.
b. it signed a peace treaty with the soviet union.
c. it insisted that east and west germany be united.
d. it organized an airlift to send supplies to west berlin

The United States responded to the crisis in West Berlin in 1948–1949 with the "Berlin Airlift," in which crucial supplies and food were dropped into the occupied region. So the answer would be D.

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The correct answer is D. It organized an airlift to send supplies to West Berlin. What happened was that the Soviets wanted for the westerners to relinquish their power in Berlin and remove the Deutsche Mark as a currency. Since that wasn't an option, there was a full blockade of transportation into West Berlin. The US responded by organizing, together with other allies, over 200,000 flights a year with thousands of tons of necessities being dropped to people in need in Berlin.