Most evidence suggests that our early ancestors came out of Africa.
The first stone tools, found in Eastern Africa, can be dated to this time. Age would have simply bashed two stones together to create a sharp edge. This crude tool could then be used in the killing and cutting of animals. They spent most of their time locked in a continual struggle for survival against the unpredictable forces of nature. As the Earth warmed up after each Ice Age Paleolithic Man wandered further North into Europe.