एक ______ ऐसी दूरसंचार तकनीक है, जो विभिन्न स्थानों पर मौजूद दो या दो से अधिक लोगों को एक साथ वीडियो और ऑडियो प्रसारण के माध्यम से बातचीत करने की अनुमति देती है।

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?