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Since the days of the Delhi Sultanate, the city of Delhi had acquired the reputation of being the political centre of India. No ruler could be considered to truly hold sway over "Hindustan" until he had control of Delhi. Babur, the founder of the Mughal Empire, called it the "capital of all Hindustan", and his son and successor, Humayun, constructed his Din Panah at its outskirts. Humayun, however, lost his inheritance when he was chased out of India by Sher Shah Suri who established the Sur Empire in 1540. Delhi and Agra fell into Sher Shah's hands and he razed Din Panah and built his new capital, Sher Shahabad, at the same site.