यूरोप में आधुनिक विज्ञान के शुरुआती दौर में, वैज्ञानिक रचनाएं मुख्य रूप से किन भाषाओं में लिखी जाती थीं?

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?