first country to adopt christianity as state religion
Armenians Most Armenians adhere to the Armenian Apostolic Church, a non-Chalcedonian church, which is also the world's oldest national church. Christianity began to spread in Armenia soon after Jesus' death, due to the efforts of two of his apostles, St. Thaddeus and St. Bartholomew.[26] In the early 4th century, the Kingdom of Armenia became the first state to adopt Christianity as a state religion.[27]
Protestantism in the United Kingdom Henry VIII was the first monarch to introduce a new state religion to the English. In 1532, he wanted to divorce his wife, Catherine of Aragon. When Pope Clement VII refused to consent to the divorce, Henry VIII decided to separate the entire country of England from the Roman Catholic Church. The Pope had no more authority over the people of England. This parting of ways opened the door for Protestantism to enter the country.[7]