1054, the Great Schism, in which the Western (Roman Catholic) and Eastern Orthodox churches separated from each other. After a number of earlier such schisms, the breach was later repaired, but this one continues nearly 1000 years later.
... of authority.
The first to have the title of "Tyrant" was Pisistratus in 560 BC.
In modern times Tyrant has come to mean a dictator who rules with ...