Wikijunior:Introduction to History/So, where did humans start?
Appearance
It really depends on what you call a human and where you draw the line. However, it is generally accepted that there have been people on earth for more than a million years if, by a person, you mean someone who walks on their hind legs and can make a spear.
The first prehistoric era was the /Stone age. Then, there was the /Bronze age.