Question

How was the Harappan Civilisation discovered?

Answer 1

here is ur answer.....
It was half a century later, in 1912, that more Harappan seals were discovered by J. Fleet, prompting an excavation campaign under Sir John Hubert Marshall in 1921-22 and resulting in the discovery of the civilization at Harappa by Sir John Marshall, Rai Bahadur Daya Ram Sahni and Madho Sarup Vats, and at Mohenjo-daro .......
I hope so it helps u

Answer 2

during colonoial rule n architecture was digging sites of haryana for railway . they found it while digging so.