It still astonishes me how the Gothic nations, all utterly pagan and idolators that covered all of Europe after pagan Rome's fall, all converted to Christianity in the space of less than a century. Thus one would imagine would have been only of God, yet they all were, according to the Romans, heretics... Arians. Doesn't that make you wonder? Makes one wonder even more that the Catholic faith and the Nicean doctrine had to be implemented by force upon those so called Arians, first by the approval of Constantine and his authority over the church, then by the armies of Clovis. The "Arian" nations that held out were destroyed, the Goths, Heruli and Vandals.
At first, the popes found it difficult to achieve religious primacy vis-à-vis the other archbishops around the Mediterranean. One prime example is Milan. The Roman emperors, all being pagans, would not aid them in enforcing it. To some extent, the situation changed with Constantine’s conversion. He favored Christianity, making it the state religion, yet he saw himself as the head of all the churches. This however, still did not elevate the pontiffs over their colleagues in Constantinople, Alexandria, or Jerusalem. Or for that matter Antioch. And so Catholicism invoked the doctrine of Petrine primacy. They had to. That was their only option. The later emperors, especially in the West, accepted it, but only ecclesiastically. A complicating factor was the breakup of the Roman Empire and domination by Germanic peoples. These were Christians, though not Catholics, who refused to acknowledge the pope’s supremacy or to obey his unbiblical dogmas. This problem was partly solved with the assistance of King Clovis in Gaul, who became a Catholic and used military force to impose his new religion. Thirty years later, Justinian I, reigning in Constantinople, decided to reunite the Roman Empire. To this end, he recognized the pope as the head of all the churches, with a view to gaining support in Italy. (This is the means by which the dragon gave the Papacy his power, his seat, and his authority). He sent his great general, Belisarius, first to crush the Vandals in North Africa and then the Ostrogoths in Italy, together with their Germanic religion. But after Justinian died, the other archbishops ignored his elevation of the pope, whom they no longer accepted as their superior. To add to the pontiff’s woes, another Germanic people, the Lombards, then invaded Italy and tried to dominate him, at a time when weak emperors in Constantinople were no longer able to save him. Thereupon he turned westward and petitioned the Franks to provide the necessary troops. At that time, too, the forged Donation of Constantine was produced, procuring not only deliverance from the Lombards but also "gave" him the Papal States, a temporal kingdom that lasted more than eleven centuries, until 1870.
After that comes the finale, an even more ambitious scheme of world domination, in league with a global superpower.