The Harappan civilization was the womb of mathematics from where both the concept of numbers and the numerical system originated. The numerical system developed by the Harappans included symbols for most numbers and several innovations for mathematical manipulations such as addition and multiplication.
The Harappan numerical system is decimal and additive multiplicative in usage. There are symbols for numerical from 4 to 100, 1000 and their derivatives. The numerical system which was first used by the Harappans later found its way into other ancient civilizations.
The Harappans, as the architects of the Indus valley civilization, are known to have constructed the world’s first tidal port at Lothal at the head of the Gulf of Cambay. They possessed a high degree of knowledge relating to the ebb and flow of tides and carried on brisk overseas trade with Bahrain and African countries. They were also conversant with the medical sciences and used various herbs and drugs to treat various diseases.