People in the western part of the Empire spoke what language? In what language was the Mass offered in the western part of the Empire?
People in the eastern part of the Empire spoke what language? In what language was the Divine Liturgy offered in the eastern part of the Empire?
The church is infamous
The rest of your post is inconsistent with reality.
You continue to say language when the plural is accurate languages. I suggested early those of you who think Pentecost is meaningless read some world history then you will see what languageS people spoke where the apostles preached.
Also you may not know or have been to Jerusalem to realize it was a major crossroads of roads regions and brought trade in from tribes and lands which didn’t speak Greek or latin.