Atlantic Europe Atlantic Europe Atlantic Europe is a geographical and anthropological term for the western portion of Europe which borders the Atlantic Ocean. The term may refer to the idea of Atlantic Europe as a cultural unit and/or as an biogeographical region. It comprises the Atlantic Isles (Great Britain and Ireland), Iceland, Belgium, the Netherlands, the central and northern regions of Portugal, northwestern and northern Spain (including Galicia, the Southern Basque Country), the southwestern and western portion of France (Northern Basque Country), western Scandinavia and northern Germany. Weather and overall physical conditions are relatively similar along this area (with the exception of
Christianity in Europe its state religion in AD 301. The oldest state-built church in the world, Etchmiadzin Cathedral, was built between AD 301-303. It is the seat of the Armenian Apostolic Church. The Roman Empire officially adopted Christianity in AD 380. During the Early Middle Ages, most of Europe underwent Christianization, a process essentially complete with the Baltic Christianization in the 15th century. The emergence of the notion of "Europe" or the "Western World" is intimately connected with the idea of "Christendom", especially since Christianity in the Middle East was marginalized by the rise of Islam from the 7th century, a constellation that