Explain briefly the nature of the Harappan trade.

The Harappans carried out both internal and external trade. The internal trade was carried out through land routes by bullock-carts. Within India, they got precious stones, metals and other articles from many towns.
The Harappans had commercial relations with Mesopotamia and other West Asian countries. The Harappans used to obtain gold from south India and metals like silver, tin and copper from Persia, Oman, Afghanistan and Mesopotamia. The small boats depicted on the seals indicate that the external trade was carried out by sea.