अग्निशामक वस्त्र (अग्नि-प्रतिरोधी कपड़े) मुख्य रूप से किस पदार्थ से बनाए जाते हैं?

The 'Drain of Wealth' theory was propounded by which Indian nationalist leader?

Which event is considered the turning point in Mahatma Gandhi's leadership in the Indian independence movement?

Which African leader is known for his non-violent opposition to colonial rule?