ITS D I JUST DID THE TEST ON EDGE2020
The US tried to stop the spread of communism by the Marshall Plan (giving economic aid to devasted countries), by the Berlin Airlift, by the creation of NATO and by helping form the United Nations.
The modern political party system in the U.S. is dominated by the Democratic Party and the Republican Party. These two parties have won every United States presidential election since 1852 and have controlled the United States Congress to some extent since at least 1856.