कोर (core), सेमी-पेरिफेरी (semi-periphery) और पेरिफेरी (periphery) नामक तीन संकेंद्रित क्षेत्रों वाले विश्व-व्यवस्था सिद्धांत (World-Systems Theory) का प्रतिपादन किसने किया था?

Which Indian independence movement leader was primarily known for his philosophy and practice of non-violent civil disobedience?

Who gave the call for 'Do or Die' during the Quit India Movement in 1942?

Which of the following revolutionary pairs were imprisoned together in Cellular Jail and faced harsh conditions, contributing significantly to the Indian independence movement?