How did african americans shaped the course of the civil war?

(05.04 mc) how did the roman transportation system keep the empire strong? plz

Who coined the phrase “go west and grow with the country”?

As time went on, pan-africanism became a philosophy that: a. africans gain colonies in asia.b. african americans be proud of their african descent andwork toward civil rights.c. start many world's fairs to showcase african successes.d. europeans conquer african territory.