Buddhism originated in Vietnam in the 2nd-3rd century BCE from India but later spread more widely from China in the 1st-2nd century CE. It gained prominence under dynasties like the Ly Dynasty when it became the state religion. However, it saw periods of decline such as when the Min Chinese invaded in 1414 and destroyed pagodas. It faced suppression under French colonial rule but restoration movements emerged in the 1920s. A key moment was Thich Quang Duc's self-immolation in 1963 to protest the Diem regime. Today, Buddhism remains influential with organizations like the Vietnamese Buddhist Sanga Society working to promote it.