Việt Minh communist People's Republic of China gave the Việt Minh both sheltered bases and heavy weapons with which to fight the French. With the additional weapons, the Việt Minh were able to take control over many rural areas of the country. Soon after that, they began to advance towards the French-occupied areas. Following their defeat at the Battle of Điện Biên Phủ, the French began negotiations to leave Vietnam. As a result of peace accords worked out at the Geneva Conference in Geneva, Switzerland, Vietnam was divided into North Vietnam and South Vietnam at the 17th Parallel as a temporary measure
49th parallel north the 1846 Oregon Treaty. This agreement divided the Oregon Country between British North America and the United States by extending the 49th parallel boundary to the west coast, ending in the Strait of Georgia; it then circumvents Vancouver Island through Boundary Pass, Haro Strait, and the Strait of Juan de Fuca. This had the side effect of isolating Point Roberts, Washington. Although parts of Vancouver Island and parts of Eastern Canada are south of the 49th parallel, and parts of the United States (Alaska, Northwest Angle) are north of it, the term "49th parallel" is sometimes used metonymically to refer