One similarity between the ancient African kingdoms of Ghana, Mali, and Songhai is that all of these kingdoms were located:
A: in coastal areas
B: in rain forest areas
C: on major trading routes
D:in mountainous terrain

Why were the chang and xi rivers important to china’s development? a. they keep invaders out. c. they kept china isolated. b. they provided a route for ships to travel inland. d. they provided boundaries for the different political sections