Created in analogy to brother era names felt to overlap specific time periods, The Short Twentieth Century is a term used by some historians to denote the period 1914—1989 (or perhaps a couple of years later - the Cold War has no exact end date), where World War I and the fall of the Soviet Union represented such significant changes in world history as to redefine the era.

See also:

• Eighty Years' War (1914-1995)
• American Century
• Eric Hobsbawm' The Short Twentieth Century, 1914-1991

20th century