2000-   northwest India.
1300
BC
c. 850- Painted Grey Ware (PGW) culture of pastoral-agriculturists on
400 BC merger with the local late Harappan culture; Limited use of
        iron.
c. 600 Beginning of Indian historical era.
BC
c. 700- Northern Black Polished Ware (NBPW) culture with full-
100 BC fledged use of iron and urbanisation of the Ganga Plain.
                Table 8 Chronology of Prehistoric India
           Table 9 Archeological Stages of Belan Valley in UP