What was the most conducive topography to sustain life in africa and why?

Africa is second largest and most famous continent.

Explanation:

It is known for all that Africa is so high in plateau than the traditional data. In Africa continent there is the oldest part called craton. In continents, there are several craton or we can say two or more than two craton. Southern Africa lies above to the sea level around 1000 meters.

It is the second most largest continent on earth. Around 20% land of earth comes in Africa. In Africa there are Sahara desert. Africa desert is separated by Mediterranean sea. There are Suez canal that is the back bone of Africa. Algeria is the largest country of Africa.

a big wall across the mexican border so no drugs, terrorist, or illegal immigrants can come through : )    

b)

it created free trade throughout the colonial territories.