Economy

**Statement 1 is correct:** The 'Amil' was indeed the officer in charge of revenue collection in the revenue administration of the Delhi Sultanate. **Statement 2 is incorrect:** The Iqta system was not an ancient indigenous institution of India but was rather an administrative system borrowed from the Persianate world. It was introduced by the Delhi Sultanate, primarily under the rule of the Ghurid dynasty, to organize and administer their territories. **Statement 3 is incorrect:** The office of 'Mir Bakshi' was not established during the reign of the Khalji Sultans. It was introduced later during the Mughal period, under the reign of Emperor Akbar, as a military office responsible for managing the imperial army and its finances. Therefore, only statement 1 is correct.