Contemporary history
Contemporary history is a closely linked history on the timeline, a specific point of view of modern history, that is, history, or history associated with the individual. The term "contemporary history" was used as early as the 19th century and became a field in the 21st century. In the broadest sense, contemporary history is still in the history of people's living memory, based on human life expectancy of about 80 years, contemporary history is about 80 years from the current time. In the 1920s, the contemporary history of this period, since the 1940s, has so far included the postwar period of the Second World War, the Cold War and other events. Narrowly speaking, contemporary history refers to the current history of most adults in memory, about a continuation of a generation. In 2015, for example, today's surviving human beings, of which the median age is 30 years old, that is to say now alive human beings, about half were born around 1985, contemporary history is equivalent to this period since now, Which is equivalent to the history of the 1980s so far. Obviously, as the generations change, the time of contemporary history also changes. ...