Fellowship of Congregational Churches in 1995 and formed the Congregational Federation of Australia. Bulgaria Congregationalists (called "Evangelicals" in Bulgaria; the word "Protestant" is not used) were among the first Protestant missionaries to the Ottoman Empire and to the Northwestern part of the European Ottoman Empire which is now Bulgaria, where their work to convert these Orthodox Christians was unhampered by the death penalty imposed by the Ottomans on Muslim converts to Christianity. These missionaries were significant contributors to the Bulgarian National Revival movement. Today, Protestantism in Bulgaria represents the third largest religious group, behind Orthodox and Muslim. Missionaries from the United States first arrived in 1857–58, sent to Istanbul by the American Board of Commissioners for Foreign Missions (ABCFM). The ABCFM was proposed in 1810 by the Congregationalist graduates of Williams College, MA, and was chartered in 1812 to support missions by Congregationalists, Presbyterian (1812–1870), Dutch-Reformed (1819–1857) and other denominational members. The ABCFM focused its efforts on southern Bulgaria and the Methodist Church on the region north of the Balkan Mountains (Stara Planina, or "Old Mountains"). In 1857, Cyrus Hamlin and Charles Morse established three missionary centres in southern Bulgaria – in Odrin (Edirne, former capital city of the Ottoman Empire, in Turkey), Plovdiv and Stara Zagora. They were joined in 1859 by Russian-born naturalized America Frederic Flocken in 1859. American Presbyterian minister Elias Riggs commissioned, supported and edited the work of Bulgarian monk Neofit Rilski to create a Bible translations into Bulgarian which was then distributed widely in Bulgaria in 1871 and thereafter. This effort was supported by Congregationalist missionary Albert Long, Konstantin Fotinov, Hristodul Sechan-Nikolov and Petko Slaveikov. Reportedly, 2,000 copies of the newly translated Bulgarian language New Testament were sold within the first two weeks. Congregational churches were established in Bansko, Veliko Turnovo, and Svishtov between 1840 and 1878, followed by Sofia in 1899. By 1909, there were 19 Congregational churches, with a total congregation of 1,456 in southern Bulgaria offering normal Sunday services, Sunday schools for children, biblical instruction for adults; as well as women's groups and youth groups. Summer Bible schools were held annually from 1896 to 1948. Congregationalists led by Dr. James F. Clarke opened Bulgaria's first Protestant primary school for boys in Plovdiv in 1860, followed three years later by a primary school for girls in Stara Zagora. In 1871 the two schools were moved to Samokov and merged as the American College,