The Treaty of Yandaboo, signed on February 24, 1826, marked the end of the First Anglo-Burmese War. This treaty had great importance for both the British East India Company and the Burmese Empire, changing the political geography of Southeast Asia.
Territorial Losses for Burma:
Concession of Territory: The Burmese Empire was compelled to cede vast territories, such as Assam, Manipur, and Arakan, to the British East India Company.
Loss of Prestige: The treaty greatly diminished the influence of the Burmese in the region.
Expansion of Britain Agreement led to strong consolidation by British East India Company in North East India.: It opened doors to more aggressive expansion by Britain in Southeast Asia, that resulted in the eventual annexation of Burma.
Economic Implications: The Burmese Empire was asked to pay a huge war indemnity to the British East India Company.  War and its aftermath greatly strained both empires financially. It put a great economic pressure on both empires that waged the war.
Diplomatic Impact: Through the treaty, the Burmese Empire and British East India Company established diplomatic relationships.
British Presence: The treaty was when the British influence began among the Burmese political affairs. The Treaty of Yandaboo was a turning point to the history of Southeast Asia.