that those killed among the missionaries were very numerous. (See Martyr Saints of China). Altogether, about 200 MEP missionaries died of violent death. Among them 23 were beatified, of whom 20 were canonized, with an additional 3 in 2000. Authors such as Chateaubriand, with his Génie du christianisme, also contributed to the recovery of the militant spirit of Catholicism, after the troubles of the French Revolution. By 1820, the territory of the Missions, which included India since the prohition of the Company of Jesus (the Jesuits) in 1776, extended to Korea, Japan, Manchuria, Tibet, Burma, Malaysia etc... In the 19th century, the local persecutions of missionary priests of the Paris Foreign Missions Society was often a pretext for French military intervention in Asia, based on the doctrine of the Protectorate of missions. These persecutions were described in Europe by books, pamphlets, annals, and journals, inspiring numerous young men either with the desire for martyrdom or that of evangelization. They played a part in inspiring European nations, especially France and England, to intervene in Indochina and China. Another cause of the progress of the missionaries was the ease and frequency of communication in consequence of the invention of steam and the opening of the Suez Canal. A voyage could be made safely in one month which formerly required eight to ten months amid many dangers. In Vietnam, the persecutions of numerous priests such as Pierre Borie or Augustin Schoeffer was used as a justification for the armed interventions of Jean-Baptiste Cécille and Charles Rigault de Genouilly, ultimately leading to the occupation of Vietnam and the creation of French Indochina. In Korea, the beheading of Siméon-François Berneux and other priests justified the 1866 French Campaign against Korea. Vietnam In 1825, emperor Minh Mạng, the son and successor of Gia Long, prohibited foreign missionaries in Vietnam, on the grounds that they perverted the people. The prohibition proved largely ineffective, as missionaries continued their activities in Vietnam, and participated in armed rebellions against Minh Mạng, as in the Lê Văn Khôi revolt (1833–1835). He banned Catholicism completely, as well as French and Vietnamese priests (1833–1836), leading to persecutions of French missionaries. These included the martyrdom of Joseph Marchand in 1835 or Pierre Borie in 1838. These events served in France to stoke a desire among young men to intervene and protect the Catholic faith. Ming Man's successor, Thiệu Trị, upheld the anti-Catholic policy of