How many years ago did ancient people live on Earth?

Scientists and historians have put forward the idea that the first people on Earth were skilled people, who appeared about three million years ago. They have just begun to develop as creatures separate from animals, but closely related to them. Then, about 1.5 million years ago, the Pithecanthropus appeared. They soon evolved to be Neanderthals. The Neanderthal was much more capable than the earliest people. The Cro-Magnons followed them. These are intelligent people who have become more resilient and socialized in the world.