History

Edward Gibbon is the author of the famous work "The History of the Decline and Fall of the Roman Empire," a comprehensive and influential historical book on the Roman Empire's decline.

The Indian Councils Act of 1892 enlarged the membership of the Central Legislative Council, increasing Indian representation and allowing for more discussion on legislative matters. The other years listed do not correspond to this act.

Scholarly consensus based on linguistic, archaeological, and genetic evidence places the migration of the Aryans into India during the Bronze Age, approximately between 1900 BCE and 1200 BCE, with around 1500 BCE being the most commonly cited date. This migration originated from Central Asia. The dates given in the options 8000 BC, 6500 BC, and 3500 BC are far too early compared to the accepted timeframe. Therefore, the correct answer is 2500 BC (option D) as it is the closest to the actual period of Aryan migration, although even this is slightly earlier than the most accepted dates. The original question's answer (3500 BC) is incorrect and misleading.

Vasco da Gama was the Portuguese explorer who discovered the sea route to India by sailing around the Cape of Good Hope in 1498, establishing a direct maritime link between Europe and Asia.