Laestadianism is a conservative Lutheran revival movement started in Lapland in the middle of the 19th century. Named after Swedish state church administrator and temperance movement leader Lars Levi Laestadius, it is strongly marked by both pietistic and Moravian influences. It is the biggest revivalist movement in the Nordic countries. It has members mainly in Finland, North America, Norway, Russia and Sweden. There are also smaller congregations in Africa, South America and Central Europe. In addition Laestadians have missionaries in 23 countries. The number of Laestadians worldwide is estimated to be between 144,000 and 219,000.