John Marshall was a British archaeologist who served as Director-General of the Archaeological Survey of India from 1902 to 1928, devoting himself to investigating and preserving sites across India.
Summarizing the results of excavations at Mohenjo-daro and Harappa, he announced in 1924 that a civilization as old as those of Mesopotamia and Egypt had existed in the Indus valley. This made the Indus civilization known as one of the world’s ancient civilizations.