Quảng Bình Province added phủ Quảng Trạch. Under French colony (French Indochina, Quảng Bình was situated in Annam of French Indochina and Đồng Hới airbase in Quảng Bình was used by the French to attack the Việt Minh in north-central Vietnam and the Laotian Pathet army in north and south Laos. In 1954, the Geneva Accord was signed by France, Vietnam, and other parties involved. According to which, Vietnam was to be temporarily divided into 2 parts, with the 17th parallel as the boundary. North Vietnam was under the control of the Communist party while the South was an anti-communist and French collaborators
Geneva Agreement (1966) part to the treaty, has no participation in the comission) which within a period of 4 years would have to decide what could be the solution to the borderline problem, once this period has expires, the Protocol of Port Spain between Guyana, the United Kingdom, and Venezuela was signed in 1970 for which it was frozen, for a term of 12 years, part of the Geneva Agreement. In 1982, Venezuela decided not to ratify the Protocol of Port Spain and returned to what was established in the agreement. In 1983, Venezuela proposed direct negotiation with Guyana but Guyana does not