Why did they deem these five groups of people civilized and not others

“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.

the correct answer is b.

i believe george gallup used a poll in 1936