• There is much evidence that there were trade links between the Indus and the Sumerian people, as many seals of the Indus Valley have been found in Mesopotamia.

• Also, these seals reveal the use of bullock carts and oxen for land transport, and boats and ships for river and sea transport.

• The cemeteries discovered around the cities like Mohenjodaro, Harappa, Kalibangan, Lothal and Rupar throw light on the burial practices of the Harappans. Complete burial and post-cremation burial were popular at Mohenjodaro. At Lothal the burial pit was lined with burnt bricks indicating the use of coffins. Wooden coffins were also found at Harappa. The practice of pot burials is found at Lothal sometimes with pairs of skeletons. However, there is no clear evidence for the practice of Sati.