Why was there continuous political instability in West Africa between 1500 and 1700?

A.
Traders provided a regular supply of guns to tribal leaders.
B.
There was a loss of able-bodied men to the slave trade.
C.
The income of the common African was limited.
D.
Traders introduced manufactured goods from Europe.
E.
A.
people who demanded the emancipation of slaves
B.
plantation owners of the southern colonies
C.
fugitive slaves who escaped from their owners
D.
people who voted against the US Constitution
E.
the slave traders of Africa