Armenia and Artsakh are in the top five of the countries with most Christian population. According to the list presented by christiancountries.com, 99.9% of the population of the Nagorno Karabakh Republic is Christian. Armenia is fourth in the list with 98.7% of Christian population.
Christianity is the major religion on the Planet. About 2.1 billion people (33 % of world population) are Christians. Nations started to accept Christianity at different times and due to various reasons.
The website reminds that “Armenia was the first nation in the World that accepted Christianity as state religion in 301 AD. Roman Empire accepted Christianity in 313 AD, and Georgia was the third country.”