This country was led by prince henry the navigator who brought together mapmakers, scientists, and shipbuilders to improve his country's navy.

“the battle of stalingrad is not a turning point necessarily in strategic terms, because a lot more has to be done before the soviets can be certain of defeating germany,” says renowned world war ii historian richard overy. the germans had fought nearly a thousand miles across the soviet union to get to stalingrad.

im going to go with b.

i believe that d is the right answer