Umbanda (ũˈbɐ̃dɐ) is an Afro-Brazilian religion that emerged in Rio de Janeiro in the 1920s. Deriving largely from Spiritism, it also combines elements from Afro-Brazilian traditions like Candomblé as well as Roman Catholicism. There is no central authority in control of Umbanda, which is organized around autonomous places of worship termed centros or terreiros. Umbanda has many branches, each one with a different set of beliefs and practices. Some common beliefs are the existence of a Supreme Being and creator of the universe known as Olodumare. Other common beliefs are the existence of deities called Orixás, most of them syncretized with Catholic saints that act as divine energy and forces of nature; spirits of deceased people that counsel and guide practitioners through troubles in the material world; psychics, or mediums, who have a natural ability that can be perfected to bring messages from the spiritual world of Orixás and the guiding spirits; reincarnation and spiritual evolution through many material lives (karmic law) and the practice of charity and social fraternity. Although some of its beliefs and most of its practices existed in the late 19th century in almost all Brazil, it is assumed that Umbanda originated in Niterói and surrounding areas in the early 20th century, mainly due to the work of Zélio Fernandino de Moraes, a psychic ("medium") who practiced Umbanda among the poor Brazilians of African descent. Umbanda gained increased social recognition and respectability amid the military dictatorship of 1964 to 1985, despite growing opposition from both the Roman Catholic Church and Pentecostal groups. In its heyday of the 1960s and 1970s, Umbanda was estimated to have between 10 and 20 million followers in Brazil. In the 21st century, hundreds of thousands of Brazilians identify as Umbandists. Umbanda is found primarily in urban areas of southern Brazil although has spread throughout the country and to other parts of the Americas.