Answer:
Population and Geographical Differences.
Explanation:
When it comes to Africa, its a dry land and more popluates with animals more than actual people. At the bottom, it shows how people of Africa adapted to the world near water for better resources like water and better fertile soil. As well as population, theres not many people around Africa compared to the US. This could mean they may be decreasing in population due to lack of resources.
On the other hand, since we have fertile land and we continue to grow crops (and trade) we are more populated on North America. This shows how we have more abilites and resources than Africa (as they are limited).
This may also show the differences in laes, culture, beliefs, and differences in land.
