Greek East and Latin West

"Greek East" and "Latin West" are terms used to distinguish between the two parts of the Greco-Roman world, specifically the eastern regions where Greek was the lingua franca, and the western parts where Latin filled this role. During the Roman Empire a divide had persisted between Latin- and Greek-speaking areas; this divide was encouraged by administrative changes in the empire's structure between the 3rd and 5th centuries, which led ultimately to the establishment of separate Eastern and Western halves of the Empire.

After the fall of the Western Empire, the terms "Greek East" and "Latin West" are applied to areas that were formerly part of the Eastern or Western Empires, and also to areas that fell under the Greek or Latin cultural sphere but which had never been part of the Roman Empire. In this sense, particular attention is given to differences in Christianity in the two parts, specifically between Western Christianity and Eastern Christianity.

Use with regard to the Roman Empire