1 Stone Age: It is the first period of archaeological division of early human history, that is, from the appearance of human beings to the appearance of bronzes, starting about 200-300 million years ago and ending about 6000-4000 years ago. This era is a period when human beings gradually evolved from ape-man to modern man after a long history.

The Bronze Age, also known as the Bronze Stone Age and the Metallographic Age. It refers to the transitional period between the Neolithic Age and the Bronze Age, marked by the use of red copper.

3 Bronze Age: The first age when people used metal. The bronze age began in different periods in different regions. Greece and Egypt began before 3000 BC, and China began in 1800 BC. Bronze is an alloy of copper and tin.

4. The Iron Age began around BC 1400, and people began to forge iron, which promoted the development of social productive forces.

5. The term used in the Dark Age18th century refers to the history of Western Europe in the early Middle Ages; With the decline of the Roman Empire, Western Europe entered the so-called dark age. This name is quite appropriate, because most Roman civilizations were destroyed during this period and replaced by barbarian cultures. On the one hand, the name is used because there are few historical documents handed down since this era, so that people can only know a little about what happened at that time through the dim light.

6. Enlightenment: Specifically, the time span before and after industrial revolution in europe is: A.D./KOOC-0/7/KOOC-0/6 (A.D./KOOC-0/7/6)-A.D./KOOC-0/880.

7. age of steam started in the early19th century and ended in the second industrial revolution in 1970s. The invention and application of the steam engine brought mankind into age of steam.

8. The electrical age; Since the 1960s and 1970s, the invention and use of generators and motors, as well as the appearance of electric light trams and movie projectors, have marked the beginning of the electrical age.

9. Atomic Age:1942 65438+On February 2nd, a group of American scientists led by Fermi built the first atomic reactor, which was located in the campus of the University of Chicago. The era of people using atomic energy began.

10. information age: the concept of time span in developed countries in Europe and America is from1969 (1969 ad)-the future information age in China and some developing countries means1984 (1976 ad)-the future is 60 years later than that in Europe and America. At the end of 1950s, with the appearance and gradual popularization of computers, the influence of information on the whole society was gradually promoted to an absolutely important position. The amount of information, the speed of information dissemination, the speed of information processing and the degree of information application are all increasing geometrically. Mankind has entered the information age.