The United States sent aid to Greece and Turkey in 1947 to help them resist communist pressure after World War II. Which policy is shown?

After World War II, the United States funded Western European recovery to strengthen economies and reduce communist influence. Which program was this?

When the Soviet Union blocked land routes to West Berlin, U.S. and British planes carried food and fuel into the city. Which response was this?

A 1950 U.S. security report urged a major military buildup to contain Soviet power. Which policy paper was it?

The map shows the Soviet Union and, in the darker color, Greece and Turkey, which the United States aided in 1947 to keep communism from spreading without directly attacking the Soviet Union. Which strategy was this?

In 1949, the United States, Canada, and western European nations formed a mutual defense alliance across the Atlantic. Which alliance was it?

In 1955, the Soviet Union and the communist governments of Eastern Europe formed a military alliance. Some of its members are shaded on the map. Which alliance was this?

After the Soviet Union tested an atomic bomb, President Truman ordered work on a more powerful thermonuclear weapon. Which development followed?

The Soviet launch of the first artificial satellite in 1957 intensified U.S.-Soviet competition in space and missiles. Which event was it?

In 1972, the United States and Soviet Union signed agreements limiting antiballistic missile systems and strategic offensive missiles. Which arms-control agreement was this?

In 1950, communist forces from the north crossed the 38th parallel shown on the map and invaded the south. A U.N. command led by the United States fought back. Which conflict was this?

U.S. leaders backed the southern government of the country shown on the map, which was divided at the dashed line, because they feared communism would spread through Southeast Asia. Which conflict was this?

A U-2 spy plane photographed Soviet missile sites 90 miles from Florida, and President Kennedy ordered a naval quarantine in October 1962. Which crisis was this?

The Soviet Union cut rail, road, and water access to West Berlin in 1948, trying to pressure Western Allies out. Which crisis began there?

East Germany built a wall through Berlin in 1961, and U.S. and Soviet tanks later faced off at Checkpoint Charlie. Which crisis was this?

In 1989, Poland held partly free elections, Hungary opened its border, and the Berlin Wall came down. Which Cold War change did this show?

Gorbachev promoted restructuring and openness while trying to reform the struggling Soviet system in the 1980s. Which reform pair is described?

After a failed August 1991 coup, Soviet republics such as Ukraine declared independence, and Gorbachev resigned in December. Which event is described?

In October 1990, a country split into rival states since 1949 joined back together after communist rule collapsed in its eastern half. Which event was this?

After 1991, U.S. foreign policy faced more focus on nuclear proliferation, terrorism, ethnic conflicts, and economic issues. Which era began?