पर्वतारोही अपने साथ ऑक्सीजन सिलेंडर ले जाते हैं, मुख्य रूप से इसलिए क्योंकि उन्हें इसकी आवश्यकता होती है:

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?