Answer:
shifting the responsibilities and cost for many programs to state governments
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.
So slavery and trapping of other tribes was already a thing in Africa before slavery went to the U.S. Because the U.S started doing it, tribes now wanted to enslave as many people as they could to get money from trades that would se d slaves over. This meant tribes fell apart, cultures were lost, and people were hunted down to sell as slaves.
the answer is C because technology nowadays really can improve our live