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. The Sumerian King List, dating to the second millennium BC—and for most parts it is n… See more

Periodizing blocks might overlap, conflict or contradict one another. Some have a cultural usage (the "Gilded Age"), others refer to prominent historical events ('the Interwar period), while others are defined by decimal … See more

In archeology, the usual method for periodization of the distant prehistoric past is to rely on changes in material culture and technology, such as the Stone Age, Bronze Age and Iron Age and their sub-divisions also based on di… See more