उत्तर-पूर्वी भारत में स्थित 'पूर्वांचल' पहाड़ियाँ निम्नलिखित में से किसका हिस्सा हैं?

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?