'सेफ्टी वाल्व थ्योरी' (सुरक्षा कपाट सिद्धांत) ऐतिहासिक रूप से निम्नलिखित में से किस घटना से संबद्ध है?

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?