French Crown Jewels Holy Ampulla, performed for the first time at Notre-Dame de Reims in 816 for Louis the Pious, then with the Crown of Charlemagne. From 888 to 922, then 1027, all monarchs were crowned until the French revolution, in the Notre-Dame de Reims cathedral (apart from Louis VI and Henry IV, who were crowned in Orléans and Chartres). After the revolution, only Emperor Napoleon I, Empress Josephine and King Charles X were crowned. Though not always used, a set of expensive crown jewels did exist and was augmented by various monarchs. The Crown Jewels or "Diamants de la Couronne de France",
French Indochina until 21 July 1954. In the four protectorates, the French formally left the local rulers in power, who were the Emperors of Vietnam, Kings of Cambodia, and Kings of Luang Prabang, but in fact gathered all powers in their hands, the local rulers acting only as figureheads. French troops landed in Vietnam in 1858 and by the mid-1880s they had established a firm grip over the northern region. From 1885 to 1895, led a rebellion against France. Nationalist sentiments intensified in Vietnam, especially during and after World War I, but all the uprisings and tentative efforts failed to obtain sufficient