What are the features of the development of historical science in the 20th century?

History is an important science for learning and analyzing events and their consequences in the past. However, in the 20th century, there have been some shifts in historical science. During the Cold War, the media and governments of different countries tried to present information in their own interests. No one was protected from propaganda. Even in the USSR in the 20th century, history was presented to the broad masses in its own light. Some moments were hushed up, some were embellished. This was the main feature of the totalitarian state.