The Indus Script is the writing system developed by the Indus Valley Civilization and it is the earliest form of writing known in the Indian subcontinent. Based on the fact that only one sign is displayed on the pottery surface, these examples represent a premature stage in the development of the Indus Script.The first farmers liked living near the river because it kept the land green and fertile for growing crops. These farmers lived together in villages which grew over time into large ancient cities, like Harappa and Mohenjo-Daro. The Indus people needed river water to drink, wash and to irrigate their fields.