Mormonism
Other splits in the Church happened later. The Church of Jesus Christ of Latter-day Saints (LDS) teaches that a man should only marry one woman. This is called monogamy. In the beginning of the church, this was different. A man could be married to more than one woman at the same time (called polygamy). When the Church changed its position in 1890, some people left the official Church and continued with polygamy. These groups are very small compared to the LDS. The groups that did not want to abandon polygamy are sometimes still called Mormon, even though in the official church, polygamy has been forbidden since 1890. Most of these smaller groups stay away from other people, since polygamy is illegal in the United States. The LDS tells people not to use the word Mormon or pictures of Church leaders and temples when talking about these groups, since it makes it seem like they are still connected to the LDS even though they are not.