structural:expansion, linguistic:voice_change, information:highlighting
Religion

The principal religion in French Indochina was Buddhism, with Mahayana Buddhism influenced by Confucianism more dominant in Vietnam, while Theravāda Buddhism was more widespread in Laos and Cambodia. In addition, active Roman Catholic missionaries were widespread throughout Indochina and roughly 10% of Tonkin's population identified as Catholic by the end of French rule. Cao Đài 's and Hòa Hảo 's origins began during this period as well.