Which event in 1948–1949 demonstrated the West’s resolve to supply West Berlin by air after a Soviet blockade?

The Plessy v. Ferguson decision (1896) upheld which legal principle?

Which policy declared that the United States would provide political, military, and economic support to countries resisting communism and became a cornerstone of early Cold War policy?

What was a major domestic consequence of World War I in the United States, reflecting heightened racial tensions and migration patterns?

Which internal phenomenon in the United States during the early Cold War involved intense fear of communism and led to investigations and blacklists?

What does the term ‘Jim Crow’ primarily refer to in the context of the Progressive Era South?

What was the Open Door Policy primarily aimed at in China?

What major policy shift did Eisenhower advocate regarding how the United States should respond to Soviet power?

Which 1950 policy memo urged a rapid buildup of U.S. military and economic power to counter the Soviet threat?

What major international organization was formed in 1949 to promote collective security and prevent future wars, including the U.S. as a member?