the precise beginning and ending of any 'period' is often arbitrary, since it has changed over time and over the course of history. Systems of periodization are more or less arbitrary, yet it provides a framework to help us understand them. Periodizing labels are continually challenged and redefined, but once established, period "brands" are so convenient that many are hard to change.

History

The practice of dividing history into ages or periods is as early as the development of writing, and can be traced to the Sumerian period.

1.Previous
3.Next