दल-बदल विरोधी कानून, जिसे भारतीय संविधान की दसवीं अनुसूची के रूप में भी जाना जाता है, किस वर्ष लागू हुआ 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?