기독교가 국교인 나라는 몇 개국인가?
Christianity in multiple forms is the state religion of the following 15 nations: Argentina (Catholic Church), Armenia (Armenian Apostolic Church), Tuvalu (Church of Tuvalu), Tonga (Free Wesleyan Church of Tonga), Costa Rica (Catholic Church), Kingdom of Denmark (Danish National Church), England (Church of England), Greece (Eastern Orthodox Church), Georgia (Eastern Orthodox Church), Iceland (Church of Iceland), Liechtenstein (Catholic Church), Malta (Catholic Church), Monaco 
(Catholic Church), Vatican City (Catholic Church), and Zambia.
15 nations