Prehistoric studies conducted all over the world made it possible to unearth preliterate cultures and discover a big diversification of civilizations created by man. Prehistory made us aware that all people irrespective of the age of their cultural status can document their past by millions of fossil findings. Thanks to the prehistory man with his material apparatus of technique, his self-knowledge in such fields as ethics, religion, or philosophy may be analyzed as a result of the evolutional process, which for a long time has been understood as changes in other forms of life. A difference between man and animal was revealed in the process of assimilating and processing the nature by him. The idea of work, which thanks to prehistory ma...