Saints Peter and Paul went to Rome to establish the Catholic faith there, but it was already set up by Our Blessed Lord and the Holy Spirit working through the Apostles in Jerusalem, thus they brought the Catholic Church to Rome, they did not go there to set it up. At the links below is information about the tombs of St. Peter (under the high altar in St. Peter's Basilica) and the St. Paul (in St. Paul Outside the Walls).
We don't know the exact year that St. Peter went to Rome, nor the year that he was martyred there, but with his death and burial in Rome; along with that of St. Paul, Rome became the center of the Catholic Church until the end. See the Catholic Encyclopedia article at the link below.
It is called so because "Two Romes fell". It means the Roman Catholic Church went through many reforms and changed a lot of key aspects. Bysantian Constantinople got the Second Rome status after the First Rome "spiritually" fell and kept the original Christianity untill it fell too but physically - it went to Turkey. So at that moment Moscow (which was the proximate successor of Bysantium) had to take the role of the new centre of the Orthodox Catholic Church. Moscow also stands on seven hills just like Rome and Constantinople.
He played Baseball. He went to a Catholic church.
It is called so because "Two Romes fell". It means the Roman Catholic Church went through many reforms and changed a lot of key aspects. Bysantian Constantinople got the Second Rome status after the First Rome "spiritually" fell and kept the original Christianity untill it fell too but physically - it went to Turkey. So at that moment Moscow (which was the proximate successor of Bysantium) had to take the role of the new centre of the Orthodox Catholic Church. Moscow also stands on seven hills just like Rome and Constantinople.
Well, ever since St. Peter went to Rome in the first century and was martyred there, the center of the Catholic Church has always been Rome. Over the following nineteen centuries, it has, through its preaching and missions, spread throughout the world.
The Lutherans - a Church set up by Martin Luther in protest (ie 'Protestant') against what he saw as corruption in the Church of Rome.
He was a Catholic priest. He went to a Catholic church.
He went to a Catholic Church in S tradford England
You are confused, first of all, there is no "independent Catholic grouping", there is just the world-wide Catholic Church under the successor of St. Peter. Our Blessed Lord has only established One Church, and, as it is His Body, It will remain ONE until the end of the world. Secondly, Constantine did not select anything, and did not "formalize" the Catholic Church. All Constantine did was to make Christianity legal. The center of the Catholic Church as always been in Rome since St. Peter went there, and died there. Constantine legalized Christianity, but did not become a Christian, himself, until on his death bed.
Yes, in that they both originated with the Catholic Church, went into schism, while retaining valid Orders and valid sacraments: to that extent they are alike, although the American Catholic Church, which is derived from the Old Catholic Church, a schismatic group that went into schism after the First Vatican Council, is not in communion with the Catholic Church nor the Orthodox Church. The American Catholic Church is in communion with the Anglican Church meaning, when all is said and done, they are yet another protestant church, while the Russian Orthodox remains Catholic to a degree.
People who were not Catholic took over.
The Roman Catholic Religion originally came from Judaism. All the founding members of the Church were Jews. Our Blessed Lord, Himself, was a Jew, and His apostles were all Jews. The "Roman" part of it comes from the fact that the first Pope, Peter, went to Rome, which was the center of the civilized world at that point in history, and the Church has spread out from Rome to cover the world. "Roman" is an epithet first commonly used in England after the protestant revolt to describe the Catholic Church. It is never used by the Catholic Church.