एक ________ को अक्सर एक गाइड के रूप में तैयार किया जाता है, ताकि इसके ऊपर एक आवृत्ति बहुभुज (frequency polygon) को आसानी से खींचा जा सके।

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?