पोलैंड पर जर्मन आक्रमण के साथ द्वितीय विश्व युद्ध किस तारीख को शुरू 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?