タイ・フランス領インドシナ紛争
In 1904 the Laotian area of the range was ceded from Siam to the French Indochina colony. Following the Franco-Thai War in 1941 it was annexed by Thailand again under the name Lan Chang (Million Elephants) Province, but returned to its pre-war status in 1946 following the 1946 Washington Accord.