With time going by a gorilla has birthed two childs one is the ancestor of all gorillas in the world the other is the predecessor of human.

The first important stage of human is the recognition revolution at that time human do not exist we are called Homo sapiens. Homo sapiens are not strong we have to escape when we meet lion. But unfortunately we know how to cooperation with other so some species are extinct from the world due to Homo sapiens massacre. So we suddenly climb to the top of foo