Answer: The growth
Explanation:
The growth and increased aridity of the Sahara region pushed people to migrate to other parts of the continent.
Because of the tsetse fly, dense human settlements were limited to the Sudanic grasslands and the Nile River valley. People became more comfortable at other regions than the Sahara due to the harsh weather condition as well.
Answer:
- availability of clean water
-rampant issues of sleeping sickness
Explanation:
The stringent availability of water or acidity of the Saharan Africa forced people to migrate towards o the parts of the continent with great proximity to clean water.
Because of the high population of tse-tse fly caused sleeping sickness cause economic like husbandry to be limited to regions of Nile river and Sudanic grass land.
