WORLD CIVILIZATION

Detailed explanation-1: -Rai Bahadur Daya Ram Sahni CIE (16 December 1879 – 7 March 1939) was an Indian archaeologist who supervised the excavation of the Indus valley site at Harappa in 1920 to 1921 But the first report of Harappan excavations came out in 1921, 29 March by John Marshall .

Detailed explanation-2: -Harappa was discovered in 1921 by Dayaram Sahni. The excavations were done under the guidance of Sir John Marshal and Colonel Meke. Remains of the Harappan civilisation has been found in other cities like Mohen-Jo-Daro, Ropar, and Alamgirpur.

Detailed explanation-3: -Archaeologists, Dayaram Sahni and R.D. Banerjee led the excavations at Harappa and Mohenjo-daro, respectively.

Detailed explanation-4: -When Dayaram Sanhi and Rakaldas Bannerji excavated the Harappan sites in Pakistan, it extended our Indian history by at least 2000 years before the Vedic age. 2. Harappa was the first of the excavated sites.