Yangon is the most populous city in which Southeast Asian country?

Yangon formerly known as Rangoon, is the capital of the Yangon Region and the largest city of Myanmar (also known as Burma). Yangon served as the capital of Myanmar until 2006, when the military government relocated the administrative functions to the purpose-built city of Naypyidaw in central Myanmar. With over 7 million people, Yangon is Myanmar's most populous city and its most important commercial centre.

Yangon boasts the largest number of colonial-era buildings in Southeast Asia, and has a unique colonial-era urban core that is remarkably intact. The colonial-era commercial core is centred around the Sule Pagoda, which is reputed to be over 2,000 years old. The city is also home to the gilded Shwedagon Pagoda – Myanmar's most sacred Buddhist pagoda. The mausoleum of the last Mughal Emperor is located in Yangon, where he had been exiled following the Indian Mutiny of 1857.

The British seized Yangon and all of Lower Burma in the Second Anglo-Burmese War of 1852, and subsequently transformed Yangon into the commercial and political hub of British Burma. The city was retaken from the Japanese occupation (1942-1945) by the Allies in May 1945, and became the capital of the Union of Burma on 4 January 1948 when the country gained independence from the British Empire. In November 2005, the government designated Naypyidaw, 320 kilometres (199 mi) north of Yangon, as the new administrative capital, and subsequently moved much of the government to the newly developed city.