How did a reliance on trade affect the development of african kingdoms?

a. african kingdoms were able to gain long-term wealth and stability.
b. african kingdoms became wary of foreigners and isolationist.
c. african kingdoms became vulnerable to foreign invasion.
d. african kingdoms consisted of local cultures with little foreign contact.

The correct answer is A) African Kingdoms were able to gain long-term wealth and stability.

Reliance on trade affected the development of the Africam Kingdoms because they were able to gain long-term wealth and stability.  

African kingdoms on the coastal area benefited of reliance on trade because commerce helped them to obtain stability and wealth. Taxation on products really helped these kingdoms to get rich. This time of prosperity contrast with the interior African territories because they were not able to trade as the coastal areas did. The interior kingdoms instead, suffered a different reality because they were conquered.