Triangular trade increased the demand for both land and slave labor
Answer:
D. It was the largest Sea to Land invasion ever attempted.
Explanation:
June 6, 1944, Operation Overlord had commenced invading the German Atlantic Wall along the Normandy beaches of France. This also comprised of paratrooper attacks behind enemy lines and bombardment of French shores by British and American warshipments. Also with the help of air support.
I believe the answer is A, but am not 100% sure.