| Civilisation | River | Contact with the Harappans |
|---|---|---|
| Harappan | Sindhu and Sarasvati | — |
| Mesopotamian | Euphrates and Tigris | Strong contacts and trade - they were close by |
| Egyptian | Nile | Little tangible evidence of direct contact |
| Chinese | Huang He | Little tangible evidence of direct contact |
Main point to remember: all four grew in river plains .
There is strong evidence of Harappan-Mesopotamian trade . For Egypt and China, there is little solid evidence of direct contact.