What event led to the break down in the relationship between Vietnam and France?

The French Indochina War broke out in 1946 and went on for eight years, with France's war effort largely funded and supplied by the United States. Finally, with their shattering defeat by the Viet Minh at the Battle of Dien Bien Phu in May 1954, the French came to the end of their rule in Indochina.

answer; taking up arms to defend the nation;