Concept map about the Byzantine Empire, the Eastern Roman Empire, from its foundation in 395 AD to the conquest of Constantinople in 1453. The map presents its political organization, the role of the emperor and Caesaropapism, the spread of Christianity, and the importance of trade. It focuses on the reign of Justinian, his reforms, the Code of Justinian, and his military campaigns to reconquer the western territories. Particular attention is given to the Gothic War and the Byzantine reconquest of Italy. A clear and comprehensive summary for studying, reviewing, and understanding the history of the Byzantine Empire.