Britain made Burma a province of India in 1886 with the capital at Rangoon. Traditional Burmese society was drastically altered by the demise of the monarchy and the separation of religion and state.
The British separated Burma from India in 1937 and granted the colony a new constitution calling for a fully elected assembly, but this proved to be a divisive issue as some Burmese felt that this was a ploy to exclude them from any further Indian reforms whereas other Burmese saw any action that removed Burma from the control of India to be a positive step.
Aung San negotiated the Panglong Agreement with ethnic leaders that guaranteed the independence of Burma as a unified state.On 4 January 1948, the nation became an independent republic, named the Union of Burma, with Sao Shwe Thaik as its first President and U Nu as its first Prime Minister.
In 1989, "Burma" became "Myanmar". The country's official full name is the "Republic of the Union of Myanmar"