[File:Map of state religions.svg|border|right|thumb|300px| A
Christian state is a country that recognizes a form of
Christianity as its official religion and often has a
state church, which is a
Christian denomination that supports the government and is supported by the government. Historically, the nations of
Armenia,
Aksum,
Georgia, as well as the
Roman Empire and
Byzantine Empire declared themselves as Christian states. Today, several nations officially identify themselves as Christian states and/or have state churches, including
Costa Rica,
Denmark,
England,
Greece,
Iceland,
Liechtenstein,
Monaco,
Tonga,
Tuvalu,
Vatican City, and
Zambia. A Christian state stands in contrast to a
secular state, an
atheist state, or another religious state, such as an
Islamic state.