For more than two hundreds years after the death of John of the Revelation, there were five bishoprics, each considered equal. Rome had one, Alexandria, Antioch, Constantinople, and Jerusalem. It was only after the Roman Empire broke into two 'legs' that the Bishopric at Rome tried to make all the others subservient. The Bishop at Rome excommunicated the Bishop at Constantinople, and then the Bishop in Constantinople returned the favor. In 445 Leo I had the Emperor declare him the 'Primate of all Bishops'. Which lasted not too long because the Western leg of the Empire fell in 476. The Eastern leg outlasted the Western by 1000 years. Oddly, the conferences held in Constantinople, before the great schism, were conducted in Greek, not Latin.
They are taught according to altered “catholic” history...which is changed to accommodate their teachings, rituals, and practices.
.....they're like liberals who change History to accommodate their agenda.