प्रथम पंचवर्षीय योजना (1951-56) के समय भारत को मुख्य रूप से किन तीन समस्याओं का सामना करना पड़ा था?

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?