How are the events above related to Franklin Roosevelt's policies and the United States' early involvement in WWII?
A)The invasion of Belgium placed Germany in a prime position to blockade and attack the United States
B) The Blockade created by Germany's use of Blitzkrieg made England dependent on U.S. aid in the form of Lend-Lease
C) Germany's control of the North Atlantic left the U.S. cut off from its allies in Europe
D) Germany's aggressive tactics left them to open to being infiltrated by U.S. supported resistance groups