Can someone tell me the main idea of this vid

the main idea is the most important, or central thought of a paragraph, or larger selection of text, which tells the reader what the text is about. so the main idea of that video is what was the purpose of the europeans enslaving the africans?

“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 answer is a. laws were enacted in the aftermath of the plot to make it harder to free slaves,increasing sectionalism