I think it's round.
Way to prove it - Watch a ship sail off to sea
You can see how the earth's curvature like that. If it was flat, then you could still see the ship.
The Scopes Trial was a court case that argued if public schools should teach mordern scientific evidence of evolution or traditional values.
I believe the answer is;
C) Specialize in specific forms of labor
They wanted to colinize them and the main reason is becuse well, l a n d and to have a bigger empire and yknow africa was easy and they wanted to export their resorses since they had stuff like bananas or gold mines or rubber