First Indochina War a decisive French defeat at the Battle of Dien Bien Phu. At the International Geneva Conference on July 21, 1954, the new socialist French government and the Việt Minh made an agreement that was denounced by the State of Vietnam and by the United States, but which effectively gave the Việt Minh control of North Vietnam above the 17th parallel. The south continued under Bảo Đại. A year later, Bảo Đại would be deposed by his prime minister, Ngô Đình Diệm, creating the Republic of Vietnam. Soon an insurgency, backed by the north, developed against Diệm's government. The conflict gradually
Quagmire theory the world. In the same year, the First Indochina war commences. This war between the Vietminh and the French, concluded with the Battle of Dien Bien Phu, a decisive victory by the Vietminh. From the First Indochina War, two states emerged, the Communist ruled north and the south, split by the 17th parallel-agreed upon at the Geneva Convention in 1954. Soon after, in 1955, war breaks out between the north and south. The domino theory was a well-accepted theory during this time period, introduced by Dwight D. Eisenhower, states that if one country falls to communism, then the rest of