The Kingdom of Luang Phrabang, also called Kingdom of Luang Prabang was formed in 1707 as a result of the split of the Kingdom of Lan Xang. When the kingdom split, Muang Phuan became a tributary state of Luang Prabang. Over the years the monarchy weakened even more, and was forced to become a vassal various times to the Burmese and the Siamese monarchies.

Lan Xang or Lancang was a Lao kingdom that held the area of present-day Laos from 1353 to 1707. For three and a half centuries, Lan Xang was one of the largest kingdoms in Southeast Asia. The kingdom is the basis for Laos's national historic and cultural identity.