Question

what are different time periods

Answer 1

The categorization of the past into discrete, quantified named blocks of time is called periodization.[1] 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 (time periods in the origin and evolution of humans) and historical(written history).

Answer 2

There are three time periods - ancient, medieval and modern