गांधार कला शैली, जो ग्रीक-बौद्ध समन्वय द्वारा विशेषता रखती है, मुख्य रूप से किस राजवंश के संरक्षण में अपने चरम पर पहुँची और विकसित हुई?

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?