Louisiana Voodoo (French: Vaudou louisianais), also known as New Orleans Voodoo or Creole Voodoo, is an African diasporic religion originating in the U.S. state of Louisiana. It arose through a process of syncretism between the traditional religions of West Africa, the Roman Catholic form of Christianity, and Haitian Vodou. The religion existed from the 18th century through to the early 20th, at which point it had effectively died out, only to be revived in an altered form in the late 20th century. There is no central authority in control of Louisiana Voodoo, which is organised through autonomous groups.