How did geography affect early african kingdoms?
desertification extended the growing season.
the great rift protected them from attack.
natural resources brought wealth and power.
seismic activity prevented invasions.

Correct answer choice is:

Mineral resources brought wealth and power.

Explanation:

The African continent is endued with gold, diamonds, oil, coltan, bauxite, uranium, ore and alternative valuable resources. Gold mining is Africa's primary mining resource on which it's economy relies. In the past, the South African kingdom of Mapungubwe flourished because of these natural resources. This is the reason, many invaders tried to invade this region to gain wealth.

the committees of correspondence were the american colonies’ means for maintaining communication lines in the years before the revolutionary war. in 1764, boston formed the earliest committee of correspondence to encourage opposition to britain’s stiffening of customs enforcement and prohibition of american paper money. the following year, new york formed a similar committee to keep the other colonies notified of its actions in resisting the stamp act. in 1773, the virginia house of burgesses proposed that each colonial legislature appoint a committee for intercolonial correspondence. the exchanges that followed built solidarity during the turbulent times and bring about the formation of the first continental congress in 1774.