Korea has no national religion. Freedom of religion is constitutionally guaranteed in South Korea. Christianity is relatively new in Korea as Roman Catholic missionaries reached the peninsula in the late 18th century. Confucianism is still very much in evidence in Korean daily life and family relationships. Buddhism still remains influential—even among people who may be nominally Christian. More than two-fifths of the population professes Christianity with Protestants (particularly Presbyterians and Methodists), independent Christians, and Roman Catholics comprising the largest groups. One-sixth of the population is Buddhist.