1977 में स्थापित हल्दिया बंदरगाह रणनीतिक रूप से किन दो नदियों के संगम पर स्थित 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?