Between 1862 and 1867, the southern third of the country became the French colony of Cochinchina. By 1884, the entire country had come under French rule, with the central and northern parts of Vietnam separated into the two protectorates of Annam and Tonkin. The three Vietnamese entities were formally integrated into the union of French Indochina in 1887. The French administration imposed significant political and cultural changes on Vietnamese society. A Western-style system of modern education introduced new humanist values into Vietnam.