In 1862, Lincoln adopted the radicalRepublican position that emancipation was a military necessity. Eventually Lincoln justified the war inabolitionist terms. After the Emancipation Proclamation went into effect (January 1863) the war lastedfor almost two more years and public discontent with the war increased.
Following a Japanese occupation in the 1940s, the Vietnamese fought French rule in the First Indochina War, eventually expelling the French in 1954. Thereafter, Vietnam was divided politically into two rival states, North and South Vietnam.ietnam's independence was gradually eroded by France â aided by large Catholic militias â in a series of military conquests between 1859 and 1885. In 1862, the southern third of the country became the French colony of Cochinchina.
In 1863 Admiral de la Grandiere, the governor of Cochinchina (as the French renamed Nam Bo), forced the Cambodian king to accept a French protectorate over that country, claiming that the Treaty of Saigon had made France heir to Vietnamese claims in Cambodia.ourane was captured in late 1858 and Gia Dinh (Saigon and later Ho Chi Minh City) in early 1859. In both cases Vietnamese Christian support for the French, predicted by the missionaries, failed to materialize. Vietnamese resistance and outbreaks of cholera and typhoid forced the French to abandon Tourane in early 1860.