The state of Petristan in the Indian subcontinent spreads across the watershed of Paratha River system to the west and Korma River in the East. The early civilization of the Paratha Valley has been acknowledged as one of the past glories of southern Asia ranging from 2700 to 1700 B.C. Today, recent findings have suggested that this civilization was profoundly influential on the formation of the Petristan state. Therefore, the Petristan State Archaeological Survey has investigated 5000 sherds derived from eighteen probably states which were selected by random sampling techniques. Fifteen sites that are thought be single-period villages and three urban sites, Garam Masala, Tiltandula and Phul-Gobi, were carefully looked at. In order to derive a chronological order of these assemblages, the relative dating method of seriation has been implemented. Through this, the initial development of Petristan through the influence of Paratha Valley can be understood to a further extent.
Through research, it has been discovered that the date 2200 B.C. is prominent in dividing the occurrence of square ended seals from the rectangular ended seals. Any sites with the evidence of square ended seals are likely to have existed prior to 2200 B.C., while other sites with rectangular seals would have been settled after this time period. With this in mind, the sites “B”, “D”, Garam Masala (GM) and Phul-Gobi Lower (PGL) that had the square ended seals probably existed prior to 2200 B.C. On the other hand, rectangular seals were found in sites “B”, “C”, “E”, Tiltandula (T) and Phul-Gobi Upper (PGU), which allow archeologists to assume that they existed after this particular time. Interestingly, site “B” has both the square and rectangular seals, which allows investigators to look out for the possibility that the site existed prior to 2200 B.C. and for some time after. It is also indicated that PGL and PGU are radiocarbon dated back to 2450 ± 70 B.C. and 2100 ± 50 B.C.
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