Because compared to previous time periods, now the US actively interfered in what was happening in Europe as well as around other places in the world. This was the main difference that distinguised isolationism from intervention.
The answer is 4.
The reason why is because after world war 1, totalitarian governments were established and they were Germany, USSR, Japan, and Italy.
Answer:
For the United States, the Marshall Plan provided markets for American goods, created reliable trading partners, and supported the development of stable democratic governments in Western Europe. Congress's approval of the Marshall Plan signaled an extension of the bipartisanship of World War II into the postwar years.
