Mr and Mrs Smith's World History
Indus River Valley: Timeline
| 4000 BC | pre-Harappan |
| 3000 BC | Sarasvati-Sindhu civilization, Increased rainfall. |
| 2600 BC | Cities develop Indus
Valley was verdant, forested, and teeming with wildlife. It was wetter too. |
| 2600-1900 BC | Indus Civilization - Harappan Culture Integration Era |
| 2500-2200 BC | Pre-Harappan |
| 2200/1700 BC | Harappan times |
| 1900-1300 BC | Late Harappan Period |
| 1900 BC | Signs of decline |
| 1800 BC | Cities abandoned. Climate changed, cooler and dryer. The region in which the river's waters formerly arose is known to be geologically active, and there is evidence of major tectonic events at the time the Indus civilization collapsed into regional cultures. |
| 1200-800 BC | Painted Grey Ware |
| 700-300 BC | Northern Black Polished Ware |
| 600 BC | Early Historic Period |
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