गुप्तकाल के किस प्राचीन विद्वान ने यह खगोलीय सिद्धांत प्रतिपादित किया था कि पृथ्वी अपनी धुरी पर घूमती है?

Mahatma Gandhi's last fast unto death in 1948 was primarily against which of the following?

What was the primary meaning of 'Swaraj' as popularized by Mahatma Gandhi during India's independence movement?

What was one major impact of India’s independence on its economy?