The correct answer is option 1 - After the Battle of Plassey. This key event took place in 1757 and marked the beginning of British colonial rule in India. The Battle of Plassey was fought between the East India Company and the Nawab of Bengal. The British victory in this battle gave them control over Bengal and laid the foundation for their direct rule over India. Option 2 - After the Battle of Panipat, is incorrect because this battle took place in 1761 and did not involve the direct rule of the British government. Option 3 - After the War of Mysore, is also incorrect because this war concluded in 1799, long after the British had established their direct rule over India. Option 4 - After the Sepoy Mutiny, is also incorrect because this event occurred in 1857, well after the British had already been ruling India directly.