औपनिवेशिक भारतीय इतिहास को समझने के लिए निम्नलिखित में से किसे 'द्वितीयक स्रोत' माना जाएगा?

Mahatma Gandhi's concept of Civil Disobedience was primarily influenced by which philosopher's writings?

Who founded the Congress-Khilafat Swaraj Party in December 1922 (functioning from 1923)?

Which son of Maharaja Ranjit Singh was taken by the British to England?