about the author of my first roller coaster
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it's answer is wrong
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Indus is a large river in Eastern Pakistan,near the border of India.The Indus valley civilisation flourished from 4th to the middle of the 2nd century BC in the valleys of this river and its tributaries. It was one of the earliest and the biggest civilisation of the world. Archaeologists found its remains in 1922. First a small part over thousand colonies was excavated. It was the centre of trade and business. Products were sent to Sumer in Mesopotamia. There were no magnificent buildings or temples, but a planned layout, right angled streets with living quarters, and a system for drinking and waste water were some of the things discovered here. It is not known why the Civilisation perished by around 1700 BC.
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