सतही जल प्रवाह (overland flow) के कारण मिट्टी की एक समान पतली परत के हटने से मुख्य रूप से किस प्रकार का मृदा अपरदन होता 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?