The growth of Sub-Saharan African Kingdoms was assisted by Agriculture and Trade. Increase in trade routes led to increase in transportation that played a major in increasing the trade activities that led to flourishing of these kingdoms, the major exports included slaves, gold, copper and animal products such as ivory, pelts, feathers and tortoise shells.
giving the "most power" to the national government, letting the president direct the executive branch, and having a "firm system of checks and balances"?
