Answer:
C
Explanation: I learned this in 7th grade
The economy of Africa consists of the trade, industry, agriculture, and human development. Following the independence of African countries during the 20th century, economic, political and other means
1. As climate changes (gets cooler or warmer), then that relates to the amount of arable land, crops and animals to feed off of.
2. The characteristics of civilization are: social structure, stable food supply, religion, government, writing, culture and technology.