Outline of Vietnam
Vietnam was under Chinese control for a thousand years before becoming a nation-state in the 10th century. Successive dynasties flourished along with geographic and political expansion deeper into Southeast Asia, until it was colonized by the French in the mid-19th century. Efforts to resist the French eventually led to their expulsion from the country in the mid-20th century, leaving a nation divided politically into two countries. Bitter fighting between the two sides continued during the Vietnam War, ending with a communist victory in 1975.
Sino-French War
French interest in northern Vietnam dated from the late 18th century, when the political Catholic priest Pigneau de Behaine recruited French volunteers to fight for Nguyễn Ánh and help begin the Nguyễn Dynasty, in an attempt to gain privileges for France and for the Roman Catholic Church. France began its colonial campaign in 1858, annexing several southern provinces in 1862 to form the colony of Cochinchina.