In astronomy, the concept of the Goldilocks Zone applies to planets that exist a certain distance from their sun. These planets orbit at a distance that might create ideal conditions for liquid water and life to exist. They are not too close to their sun, which would make it too hot for liquid water to exist, nor are they too far, which would make it too cold for liquid water to form. Consider the savanna in West Africa. How was this region a type of Goldilocks Zone for early human inhabitants? Explain your answer.