On the allied side, the British and Americans played a pivotal role, while the Canadians, Australians and the free french resistance nonetheless had important roles as well. This operation was overseen by Commander Eisenhower. On the German side, field marshals Rundstedt and Rommel oversaw defensive measures on the Normandy beaches.
The answer is 4
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Answer:
The geographic feature that prevents the growth of railroads is the Great Smoky Mountains.
Explanation:
These mountains are higher elevation, which stops railroads from being put over them.