In what year did the British Crown formally take control and invade Assam?

The correct answer is 1826. Key Points The Treaty of Yandabo was signed in 1826, marking the end of the First Anglo-Burmese War. Under this treaty, the British annexed Assam, marking the formal control of the British Crown over the region. Assam became a British province and was governed as part of Bengal Presidency initially. This marked the beginning of British administration in Assam. Additional Information Option 1: 1859 - The year 1859 is significant as it marks the end of the Indian Rebellion of 1857, but it does not relate to the British annexation of Assam. Option 3: 1860 - This year is unrelated to the invasion or annexation of Assam. It is well after the Treaty of Yandabo and British control of Assam. Option 4: 1857 - This year is significant in Indian history due to the Revolt of 1857, but it has no direct relevance to the annexation of Assam.