What skills were needed for human species to populate the earth?

The basic rule for survival is to protect oneself in the wilderness. Then comes the provide that is food for a living, and at last to produce offspring for the future generation. The evolution of the early human started when they became bipedalism, lived in caves and was engaged in hunting and gathering later they invented the fire and engaged themselves in farming and living in groups in one place.

c) many feel that their votes do not count eliminate