Which among the following civilizations had a vibrant cultural and trade center on the eastern coast of Africa? a)mali
b)benin
c)songhai
d)axum

d) Axum

Explanation:

As well as being a trade center with vibrant culture, it is the only of the choices located on the Eastern coast of Africa.

on april 6, 1917, the u.s. joined its allies--britain, france, and russia--to fight in world war i. under the command of major general john j. pershing, more than 2 million u.s. soldiers fought on battlefields in france.