The Great Schism was the division of Chalcedonian Christianity
into the Eastern (Greek) and Western (Latin) branches. The Great
Schism began in Constantinople in 1053.
When the great schism occured which empires divided?
The Roman Empire divided into the Western and Eastern, with the West centered in Rome, and the East centered in Constantinople, if you are talking about the Eastern Schism. The Great Schism in the Catholic Church usually refers to the Western Schism which divided European countries over who the true Pope was.