Answers

2014-04-14T18:53:05+05:30
A ruler came and formed harrapa civilisation
it was first civiliised city
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2014-04-16T22:46:35+05:30
The Harappa civilization collasped about 1500 B.C. Historians think that several earthquake and floods damaged the cities.     
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Sorry, my answer is the 'end' of the Harappan civilization