When Khrushchev demanded that US troops leave West Berlin, Kennedy responded by ○calling up additional troops. O building the Berlin Wall.
O withdrawing troops from the city.
○ launching the Bay of Pigs invasion.​

Explanation:

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Building the Berlin wall

evaluate the extent to which the seven years' war (french and indian war, 1754–1763) marked a turning point in american relations with great britain, analyzing what changed and what stayed the same from the period before the war to the period after it.

the government closely monitored its finances to avoid another financial collapse.