Question

here anyone are B.S.E. Student than tell me about that chapter ​

Answer 1

Answer:

when the railway line were being laid down for the the first time in the Punjab engineer stumbled upon the the site of of Harappa in present day Pakistan to them it seemed like a mound that was a rich source of readymade high quality bricks so they carried of thousands of BRICS from the walls of the old buildings of the city e to build Railway lines many buildings were completely destroyed