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Answer:
The Indus River Valley Civilization, also known as the Harappan civilization, developed the first accurate system of standardized weights and measures, some as accurate as 1.6 mm. Harappans created sculptures, seals, pottery, and jewelry from materials, such as terracotta, metal, and stone.
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.