Which treaty ended the First Anglo-Burmese War?

The Treaty of Yandabo ended the First Anglo-Burmese War.

The treaty was signed on 24 February 1826 at Yandabo, a village close to the Burmese royal capital of Ava. British forces had advanced deep into Burma after nearly two years of fighting, forcing the Burmese court to accept severe peace terms.

Under the treaty, Burma ceded Assam, Manipur, Arakan, and the Tenasserim coast. It also agreed to stop interfering in Cachar and the Jaintia Hills, exchange diplomatic representatives with Calcutta, and pay an indemnity of one million pounds sterling in four instalments. British forces retained Yangon until the early payments were made.

The war was the first of three Anglo-Burmese wars and proved extraordinarily expensive for British India, largely because disease killed many more soldiers than combat. The treaty weakened the Burmese Empire and expanded British influence across northeastern India and the coast. It is sometimes confused with the Treaty of Gandamak, which ended the Second Anglo-Afghan War in 1879.