historical periods

American Periods. Classic and Postclassic eras, Central America (200–1519) Early Intermediate, Middle Horizon, Late Intermediate, Late Horizon (Peru, 200–1534) Baroque (New World, 1600–1750) Spanish hegemony (Americas, 16th century – 1820s) Reconstruction era (United States, 1865–1877) The categorization of the past into discrete, quantified named blocks of time is called periodization. This is a list of such named time periods as defined in various fields of study. Major categorization systems include cosmological (time periods in the origin and mass evolution of the universe), geological (time periods in the origin and evolution of the Earth), anthropological and historical (time periods in the origin and evolution of human civilization).

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