What protected the kingdoms of the rainforest?
Africa's rain forest blocked invaders and provided resources.
The main difference between Africaâ??s rainforest and savannas are climate. While both are capable of producing and sustaining vegetation, rain forests are hot and moist while the savannas are dry and cool. Based on the hot, humid temperatures and overabundant fauna, It is difficult for rainforests to grow into powerful states similar to the ones common in open savannas.