Today the two largest religions are Christianity, followed throughout the south and center of Benin and in Otammari country in the Atakora, and Islam, introduced by the Songhai Empire and Hausa merchants, and now followed throughout Alibori, Borgou and Donga provinces, as well as among the Yoruba (who also follow Christianity). Many, however, continue to hold Vodun and Orisha beliefs and have incorporated the pantheon of Vodun and Orisha into Christianity. The Ahmadiyya Muslim Community, a sect originating in the 19th century, is also present in a significant minority.