That depends, Roosevelt wouldn't even enter the second world war until 3000 people died at Pearl Harbour, and Churchill smoked a lot. Who do you think is a better leader? (Okay, I did insult...
The invasion of Normandy, or D-Day, allowed the allies to get control of the coast of France. This allowed Allies to get a direct path to Germany, and potentially eliminate the dictator, Adolf Hitler.
It was the closest landfall from England. But there were numerous places up and down the Normandy coast the allies could have concentrated the landing. The idea was to keep the Germans guessing where...