Which of the following factors contributed most to the expansion of both the persian and greek empires?

a. military conquest
b. religious tolerance
c. independent city-states
d. industrial productivity

these civilizations were located around fertile rivers, where they could produce an abundance of crops

music

explanation:

du boi was considered a radical because he wanted the immediate end for segregation. the biggest different between him and booker t. washington is that, even though washington believed that segregation should be considered illegal, he did not believe at all that a law was needed to keep blacks away from whites and that this would be something natural (to have the races apart) for a long time until society adjusted, while du boi believe that agitation was the only way to end segregation.