Probably sooner, but at least by the year 100the Catholic church was recognized as such...there is no one else around....as the followers of Christ grew and matured, and multiplied, they became known as Roman (where they were)Catholics(what they were)...what's so hard to figure out....they were the ONLY Christians there....and realistically speaking, it doesn't matter what they were called, they were who they were..
Big whoppiedeedoo.
That does not in the least make Rome to then be "the center" of Christianity --- as you asserted, for there were Christians (converts from Judaism, many of them) in many locations, other than simply at Rome.
Show and prove that the Church was "centered" at Rome, as you asserted.
You can't do it, can you?
Do you know why?
Because what you say is not true, not supported by historical evidence.
Mere assertions are simply not enough, and simply will not do.
End of the road, pal. As has been said previous, in regards to your many and various assertions
Here, try this;
One of the 'official' reviews from there;
Go educate yourself, please.
We here (many of us here) are tired of trying to do it for you.