What were the origins of the Indus Valley people?
Some 5000 years ago, a nomadic people made their way into northwest India from Sumeria (modern day Iran) by means of the Mula Pass across the Himalayas, near modern Karachi, and there found a fabulously rich land, fertilized by the great river systems of the Indus, Ravi, Beas, Chenab and Sutlej. This same area forms modern-day Punjab. Compared to the deserts of Iran, this was God's blessed land, with ample water, fodder and fuel supply. Clay for making bricks was plentiful in the riverbeds and so was wood to burn the bricks. Over a period of a thousand years, these immigrants spread over an area of half a million square miles.