s/ A History of the Development of DoctrineThe line that separated Eastern Christendom from Western on the medieval map is similar to the "iron curtain" of recent times. Linguistic barriers, political divisions & liturgical differences combined to isolate the two cultures from each other. Except for such episodes as the schism between East & West or the Crusades, the development of non-Western Christendom has been largely ignored by church historians. The Spirit of Eastern Christendom explains the divisions between Eastern & Western Christendom, & identifies & describes the development of the distinctive forms taken by Christian doctrine in its Greek, Syriac & early Slavic expression.