sentences:  The first above-ground "legal" churches were built in Armenia ("see Echmiadzin").Armenia became the first country to legalize Christianity (around 301 AD) under King Tiridates III and also embrace it as the state religion in 310 AD.However, illegal churches before "Christian legalization" are mentioned throughout church history; for example, in the City of Nisibis during the persecutions of Diocletian.