I think the answer is positive feedback. hope this helps! :)
Answer:
C
Explnation Its trust im a geologist
I believe the answer is: They are based on the arbitrary borders of old European empires
African continent was colonized by different european empire. To avoid conflicts among the european, they divided africa into several territories and dtermine which country has the jurisdiction over each territories. After African nations gained independence, they still use this separation as borders to differentiate one country with another.
Explanation:
The Columbian Exchange caused population growth in Europe by bringing new crops from the America's and started Europe's economic shift towards capitalism. Colonization disrupted ecosystems, bringing in new organisms like pigs, while completely eliminating others like beavers
