How did the united states stop the spread of communism in europe following world war li?

Which kinds of evidence can historians use to interpret events from the past? check all that apply. artifacts found at historical sites articles from modern-day newspapers letters written during that period in history journals written by young students today documents with information about the past

What pact signed on 1949 reinforce that the united states would not return to an isolationist policy

Which factor was a major cause of the great depression of the 1930?