worldhistory
The Christian world from 1200 to 1450 had one pattern: the East decline and the West rose. Byzantium slowly weakened and ended when 1453 Constantinople fell to the Ottomans. Western Europe moved from a broken feudal world toward many competing states. At the same time, Eastern Orthodoxy spread to Rus and shaped its culture.
Byzantium
Byzantium saw itself as Rome continued. It kept late Roman roads, taxes, army, and officials. Its capital was Constantinople, called the “New Rome”. Power was very central. The emperor and the church were closely tied, which was a system called caesaropapism. This gave rulers holy approval and gave people a shared identity as “orthodox” Christians.
Declined
Relations with Latin Europe were tense. In 1054 the Great Schism split Eastern Orthodoxy and Roman Catholicism. The Crusades made things worse: in 1204 the Fourth Crusade captured Constantinople and hurt the empire badly. Over time Muslim Arab and Turkic powers pressed hard. Finally, in 1453 Mehmed II took the city.
Rus
In 988 Prince Vladimir of Kiev was baptized and chose the Byzantine faith. Rus adopted the Cyrillic alphabet, icons and monastic life, Byzantine style churches, and the idea that the church supports imperial rule. This made Rus more united and set it apart from Islam and Roman Catholic Europe.
Western Europe
Western Europe is far west and very broken by mountains, forests, peninsulas, and islands. That made one government hard. But long coasts and rivers helped trade. In the 900s–1000s a feudal-manorial world formed: lords held power; vassalage bound politics; monasteries often ran manors. Serfs replaced classical slaves, not owned as people, but tied to the land and owing labor and goods in return for protection and plots.
States and cities
After 1000, kings slowly gained strength. Royal courts and early administrators appeared. The Roman Catholic Church was the one cross-regional institution, and Latin was the shared written language. The church owned much land and was rich, which brought both power and criticism. Cities and merchants grew fast. Venice, Genoa, Florence, Milan were almost independent city-states. Early representative bodies formed, speaking for three estates: clergy, nobility, urban citizens (merchants).
Middle Ages
1000–1300 is the “High Middle Ages.” Climate and safety improved. Population rose from about 35 million (year 1000) to about 80 million (1340). New lands were settled; many peasants had lighter bonds than before. By the mid-1400s Europe advanced in war and sea power with gunpowder artillery, the magnetic compass, the sternpost rudder, and the lateen sail.
Timeline
988 Baptism of Rus
1054 Great Schism
1204 Fourth Crusade takes Constantinople
1453 Fall of Constantinople