1879 AD-Christian Science was granted its charter in Boston, Massachusetts

Christian Science is a set of beliefs and practices belonging to the metaphysical family of new religious movements.^{[n 2]} It was developed in 19th-century New England by Mary Baker Eddy, who argued in her 1875 book Science and Health that sickness is an illusion that can be corrected by prayer alone. The book became Christian Science's central text, along with the Bible, and by 2001 had sold over nine million copies.^[4]

Eddy and 26 followers were granted a charter in 1879 to found the Church of Christ, Scientist, and in 1894 the Mother Church, The First Church of Christ, Scientist, was built in Boston, Massachusetts.^[5]Christian Science became the fastest growing religion in the United States, with nearly 270,000 members by 1936, a figure that had declined by 1990 to just over 100,000.^[6] The church is known for its newspaper, the Christian Science Monitor, which won seven Pulitzer Prizes between 1950 and 2002, and for its public Reading Rooms around the world.^{[n 3]}

Eddy described Christian Science as a return to "primitive Christianity and its lost element of healing."^[8]There are key differences between Christian Science theology and that of other branches of Christianity.^[9] In particular, adherents subscribe to a radical form of philosophical idealism, believing that reality is purely spiritual and the material world an illusion.^[10] This includes the view that disease is a mental error rather than physical disorder, and that the sick should be treated not by medicine, but by a form of prayer that seeks to correct the beliefs responsible for the illusion of ill health.^[11]

The church does not require that Christian Scientists avoid all medical care—adherents use dentists, optometrists, obstetricians, physicians for broken bones, and vaccination when required by law—but maintains that Christian-Science prayer is most effective when not combined with medicine.^[12] Between the 1880s and 1990s, the avoidance of medical treatment led to the deaths of several adherents and their children. Parents and others were prosecuted for, and in a few cases convicted of, manslaughter or neglect.^[13]

https://en.wikipedia.org/wiki/Christian_Science

https://www.christianscience.com/