Answer:
Artifacts clarify prehistoric event and give details of culture and life of people at that time.
Explanation:
The artifacts in the form of utensils, structural remains, weapons, accessories, paintings, etc. help researchers to depict about the lifestyle of people in pre historic times.
Some times these artifacts have engravings that can be interpreted by historians to exactly understand the historical era of that time.
Most of Africa is hot, so I'd say climate change
They did it because the Ottoman Empire were suspicious of who wasn’t/ was Turkish or Muslim (something along those lines)
We were relieved by jobs, war, and other countries trade.
People revolted and set up a new government, the second republic.