वैश्विक स्तर पर जल प्रदूषण का सबसे बड़ा स्रोत निम्नलिखित में से किसे माना जाता है?

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?