The Treaty of Yandabo was signed, ending the First Anglo-Burmese War, the longest and most expensive war in the history of British India.

The Treaty of Yandabo was the peace treaty that ended the First Anglo-Burmese War. The treaty was signed on 24 February 1826, nearly two years after the war formally broke out on 5 March 1824, by General Sir Archibald Campbell on the British side, and the Governor of Legaing Maha Min Hla Kyaw Htin from the Burmese side, without any due permission and consent of the Ahom kingdom, Kachari kingdom or the other territories covered in the treaty. With the British army at Yandabo village, only 80 km (50 mi) from the capital Ava, the Burmese were forced to accept the British terms without discussion.

The First Anglo-Burmese War, also known as the First Burma War in English language accounts and First English Invasion War in Burmese language accounts, was the first of three wars fought between the British and Burmese empires in the 19th century. The war, which began primarily over the control of what is now Northeastern India, ended in a decisive British victory, giving the British total control of Assam, Cachar, Manipur and Jaintia as well as Arakan Province and Tenasserim. The Burmese submitted to a British demand to pay an indemnity of one million pounds sterling, and signed a commercial treaty.

The provinces of India, earlier presidencies of British India and still earlier, presidency towns, were the administrative divisions of British governance in South Asia. Collectively, they have been called British India. In one form or another, they existed between 1612 and 1947, conventionally divided into three historical periods:

• Between 1612 and 1757, the East India Company set up "factories" in several locations, mostly in coastal India, with the consent of the Mughal emperors, Maratha Empire or local rulers. Its rivals were the merchant trading companies of Portugal, Denmark, the Netherlands, and France. By the mid-18th century three Presidency towns: Madras, Bombay and Calcutta, had grown in size.
• During the period of Company rule in India, 1757–1858, the Company gradually acquired sovereignty over large parts of India, now called "Presidencies". However, it also increasingly came under British government oversight, in effect sharing sovereignty with the Crown. At the same time, it gradually lost its mercantile privileges.
• Following the Indian Rebellion of 1857 the company's remaining powers were transferred to the Crown. Under the British Raj (1858–1947), administrative boundaries were extended to include a few other British-administered regions, such as Upper Burma. Increasingly, however, the unwieldy presidencies were broken up into "Provinces".