This argument is raised a lot.
The Orthodox argue that the Church is authoritative in matters of the Faith...
The Latin Church argues that Rome is the Authority over the earthly Church...
The preeminence of the Pope is also a consistent witness held by MOST for the first 2100 years of the Faith of Christ.
Pre-eminence perhaps, but not having power over -
First Bishop, yes, a status of honor, not of power...
For the good order of the Church when it convened...
I wonder, for how many centuries of those 1500 years were people who disagreed with Church doctrines burned alive?
We used exile for the Arians who had been murdering us...
The Latin Church became militant in the 9th century - The Knights Templar etc were monks consecrated to war...
In the East, we hired Islamics to do the fighting...
I think there may have been external political pressures that contributed to the long period of ‘doctrinal unity’ in Christendom.
Well, Ethiopia disappeared from contact with everyone around 500AD, and was "rediscovered" by civilization a thousand years later...
A thousand years of self-governing with only local pressures...
The same Faith emerged, and exists today in Erethria and Ethiopia, just like ours...
Cosmetic differences - Resembling Jewish practices more than ours do - And one doctrinal difference...
We are what the Faith of the Apostles looks like...
The only power we have over another Church is to withdraw our Communion from them...
This we did in 1054 with the Latin Church...
We still do not share Communion with them...
We have no authority over them...
Only over ourselves...
In varying degrees of exercise...
Mind you!
Arsenios