West African empires were incredibly wealthy because... A. They sold enemies into slavery to the Europeans.
B. They sacrificed thousands of peasants to the gods every year.
C. They had gold and other valuable minerals in their region.
D. They control the access routes of the Trans-Saharan trade network.

C

Explanation:

The Africans had gold. They would also trade salt for gold because they needed salt to live

the answer is selfishly. hope this !

increases in demand are shown by a shift to the right in the demand curve. this could be caused by a number of factors, including a rise in income, a rise in the price of a substitute or a fall in the price of a complement.

which the answer is:

b