The Philippines is a secular nation having a constitution separating the state and church. However, more than 90% of the population are Christians: about 80% belong to the Roman Catholic Church while 10% belong to other Christian denominations, such as the Iglesia ni Cristo, the Philippine Independent Church, United Church of Christ in the Philippines (a mainline Protestant united church), and Jehovah's Witnesses.[170] As a result of Spanish cultural influence, the Philippines is one of two predominantly Roman Catholic countries in Asia, the other being East Timor, a former Portuguese colony.