नीति आयोग द्वारा प्रतिस्थापित होने से पहले योजना आयोग ने कितनी पंचवर्षीय योजनाएं लागू की थीं?

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?