In 1859, the British biologist Charles Darwin put forth the theory of evolution of life on the earth. The first living thing was algae which grew on the surface of water. The single-cell life form called amoeba appeared some fifty crores of years ago. Then many aquatics animal, amphibians and many reptiles developed on the earth. The birds and animals including monkeys evolved around sixty million years back. Monkey is advanced state of evolution and known as ape-man.

The early men lived on this planet some two millions year ago. His body was hairy with narrow forehead and protruding jaws. His spine had a bent. His brain was larger than other animals. These men gradually evolved into developed men which came about 7.5 lac years ago. The fossilized bones of this man was first found in china, hence known as Peking-man..

Next evolved man fossil was found in Neanderthal in Germany, hence it is known as Neanderthal-man. These men were quite developed. They know the use of fine and stone tolls. Because of their intellectual these men also know as Homo Sapien man.

Further development in the evolution of men occurred about twenty eight thousands year ago. These men know as “Cromagnon-man” because their fossil unearth from Cromagnon in France. Gradually development in the evolution of man occurred rapidly. Living style and fashion changed gradually with the nature and adopted new ideas and technologies. Man is the inventor of technologies.