Myanmar has been in armed conflict since 1948, when the country, then known as Burma, gained independence from the United Kingdom. The conflict has largely been ethnic-based, with ethnic armed organisations fighting Myanmar's armed forces, the Tatmadaw, for self-determination. Despite numerous ceasefires and the creation of autonomous self-administered zones in 2008, armed groups continue to call for independence, increased autonomy, or the federalisation of Myanmar. It is the world's longest ongoing civil war, spanning almost eight decades.