Periodization is one of the most difficult problems of historical science. There are several approaches to periodization, among which two main ones are put forward.
The first is the formational approach. proposed by Karl Marx. According to this approach, human society goes through in its development 5 main formations, which replace one another – primitive communal, slave-owning, feudal, capitalist, communist. But, for example, there was no slavery in Russia, and communism was rejected by modern society.
The second is the civilizational approach, according to which society goes through several stages of civilization development. For example Toibini put forward 30 civilizations. According to this principle, there is no single history of mankind, and history is a change of cultures.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.