Earliest Documented People

I found a website that I thought was really cool. We used some of the information to make our 30-second movie script but the information on it was actually really interesting to me. The article was basically about the earliest civilizations of people in Africa who are called the San and the Khoi Khoi. South Africa has actually been the home to people for 2.5 million years of years, much longer than anywhere else in the world. You would think that that would mean they are the most advanced country in the world, since they've had the longest amount of time to make it better. However there are a variety of reasons that have prohibited this from happening such as lack of proper resources, and being taken over by the Europeans, and more recently, all of the wars that have been going on. However, South Africa is definitely the most developed part of Africa, which may lead back to how it all started somehow. Anyways, if you want to learn more about the eariliest documented people, check out this website:
http://motherearthtravel.com/history/south-africa/history-3.htm