मानचित्र पर खींची गई वह रेखा जो समान सूर्य के प्रकाश (धूप) वाले बिंदुओं को जोड़ती है, क्या कहलाती है?

The Dandi March, also known as the Salt Satyagraha, was led by which influential leader?

Which act formally granted independence to India, marking the end of British rule?

Who was the key figure in establishing the Indian National Congress?