The Personality of India: Pre- and Proto-historic Foundation of India and Pakistan c12.15

c12.15

The more basic techniques, based on stratigraphic excavation, enable one to build up a sequence of objects, as they were deposited at the sites. Such a chronology, unless related to a known system of absolute dates, is relative. For European archaeology, the development of a calendar at a very early age in the historic civilizations of Mesopotamia and Egypt has been a boon, to give a system of relative and absolute chronology.