बबूल (एकेशिया) जैसे विभिन्न प्रकार के पेड़ों द्वारा उत्पादित गोंद को मुख्य रूप से क्या माना जाता 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?