Mention two strategies adopted to identify social differences among the Harappans.

Explanation

(i) Archaeologists classify the strategies as utilitarian and luxuries - in this objects of daily use made fairly easy out of ordinary materials - stone or clay are included. These include querns, pottery, flesh-rubbers etc.
(ii) Luxuries objects were rare and made from costly, non-local materials. Little post of faience were probably considered precious and difficult to make.