INDUS VALLEY ▸ Discovery and Time -R.B. Dayaram Sahni first discovered Harappa in 1921. • R.D. Banerjee discovered Mohenjodaro in 1922. According to radiocarbon dating, it spread from the year 2500 - 1750 BC. ▸ Geographical Extent Covered parts of Punjab, Sindh, Baluchistan, Gujarat, Rajasthan and some parts of western UP. Major sites in Pakistan are Harappa (on Ravi in W.Punjab), Mohenjodaro (on Indus), Chanhu-Daro (Sindh), etc. In India, major sites are Lothal, Rangpur and Surkotda (Gujarat), Kalibangam (Rajasthan), Banwali (Hissar), and Alamgirpur (western UP). Largest site is Rakhigarhi in Hissar, Haryana. Next comes Mohenjodaro, then Harappa. ▸ Town Planning Elaborate town-planning. It follows the grid system. Roads well cut, dividing the town into large rectangular blocks. Used burnt bricks of good quality as the building material. Their drainage system shows developed sense of health and sanitation. The towns were divided into 2 parts: Upper Part or Citadel and Lower...