Western Civilization I / Unit 9 WC1 0815 short lesson, about 20 seconds
The Great Schism, 1054
Captions available
The idea
In ten fifty-four Pope Leo IX and Patriarch Michael I excommunicated each other over Rome's claim to pre-eminence: the Great Schism between Catholic and Orthodox. Politics had divided the churches for centuries; iconoclasm made it permanent.
In practice
Catholic and Orthodox as the exam's two churches from here.
Where people slip
The Schism was a process, not one event. Ten fifty-four is the date the exam uses.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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