Nicaragua has no official religion. Catholic bishops are expected to lend their authority to important state occasions, and their pronouncements on national issues are closely followed. They can be called upon to mediate between contending parties at moments of political crisis. In 1979, Miguel D'Escoto Brockman, a priest who had embraced Liberation Theology, served in the government as foreign minister when the Sandinistas came to power. The largest denomination, and traditionally the religion of the majority, is the Roman Catholic Church. It came to Nicaragua in the 16th century with the Spanish conquest and remained, until 1939, the established faith.