The correct answer is 1809 Explanation & Key Takeaways: • 1809 is the year in which the Treaty of Amritsar was signed. • The Treaty of Amritsar was an agreement between the British East India Company and Maharaja Ranjit Singh of the Sikh Empire. • It was signed on 25th March 1809. • The treaty established the Sutlej River as the boundary between the Sikh Empire and the British territories in India. • This agreement helped in maintaining peace between the two powers and allowed the British to focus on their other territorial interests in India. Related Concepts: • Maharaja Ranjit Singh was the founder of the Sikh Empire in the northwest Indian subcontinent in the early half of the 19th century. • The British East India Company was a British trading company that eventually came to rule large areas of India, exercising military and administrative control. • The Treaty of Amritsar is a significant event in Indian history as it marked the beginning of formal relations between the British and the Sikh Empire. • This treaty allowed the British to further consolidate their power in India by securing their northern frontier. • The treaty also ensured that the British would not interfere in the internal matters of the Sikh Empire.