What made Germany’s invasions of Europe difficult to stop during World War II?
Look at the map.Europe in 1940This map illustrates

How did the United States demonstrate its isolationist policy before World War II?
Why did the 1939 cash-and-carry amendment to the Neutrality Acts favor Britain over Germany?
How did the Destroyers for Bases agreement President Roosevelt signed help Britain and its allies?
What saved many British and French forces from the Germans in 1940?
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