खिलाफत आंदोलन मुख्य रूप से किसके साथ किए गए दुर्व्यवहार के विरोध में शुरू किया गया था?

The arrival of which commission in India triggered widespread protests, including mass hartals across the country in 1928?

Which of the following leaders was instrumental in initiating and leading India’s struggle for independence?