The activities of Swaraj party had induced the British Government to review the working of the diarchy system introduced by the Montague- Chelmsford reforms
Simon commission was opposed because its all members were the English
The British Government appointed the Simon commission in Nov., 1927
Lala Lajpat Rai died during the protest of Simon commission
Some of the activities which were prevalent during the Delhi Sultanate period are as follows: religious persecution, prohibition of public worship and destruction of temples. These was often vigorously enforced by the early Muslim rulers.
Under the Mansabdari system the mansab rank was not hereditary and the lowest rank was 10 and the highest was 5,000 for the nobles. All appointments and promotions as well as dismissals in the Mansabdari system were directly made by the emperor.