What we have is the product of many faulty assumptions emanating out of twisted irrational concepts.
1. Jesus, through the parables and actions passed attributed to him, clearly was egalitarian and focused on helping the poor and unfortunate; throwing the money changers out of the Temple; considered a threat by Herod and the Romans, fomenting rebellion against the Empire. Today he would be called a socialist and commie. Yet His own disciples and followers kept framing him in terms of Lord; saw the spread of Christianity in terms of political power as much as moral power; and at one time the Pope literally crowned the various kings of Europe. And today still maintains the Vatican as a free-standing state among nations.
2. When those European nations began exploring the planet -- ironically using tools like the compass and gunpowder developed in Asia and the navigation advances of the Moors, to "discover" new and faster routes to Asia and Africa -- they viewed any people with less developed societies (in their view) as having no rights, and the Catholic Church viewed them as savages, heathens, or infidels. So they encouraged this exploration and discovery as long as priests were brought along to proselytize.
3. When Spain and Portugal began to get into disputes over South America, Britain/France/Netherlands in North America, and all of them plus a few other European countries in Oceania, Asia, and Africa, they welcomed the Vatican serving as an early United Nations or League of Nations, dividing up the pie with their concept of Discovery. Which totally ignored the fact that the overwhelming balance of the planet and its indigenous peoples recognized neither the European nations nor Christianity nor the Vatican, and vice versa.
In other words, it was a terrible solution for a problem that was never framed in the right context, provided by a self-appointed authority not recognized by most of those who were most significantly impacted, and based on its own agenda of self-aggrandizement.