Kingdom of Vientiane
In 1777, King Taksin of Siam sent an invading army to the Kingdom of Vientiane. The Thai army also attacked Champasak, and the kingdom was occupied without major resistance. King Pothi (Sayakumane) was taken prisoner to Krung Thep (Bangkok). In 1780, King Sayakumane was allowed to return to Champasak as vassal of the Siamese king.