was the byzantine missionaries or roman missionaries from this empire shared Christianity with people in other places

Both Byzantine and Roman missionaries played a significant role in spreading Christianity to various regions outside their respective empires. During the early Byzantine Empire (4th-7th century), Byzantine missionaries, primarily from Constantinople, actively propagated Christianity throughout Eastern Europe, the Caucasus, the Balkans, and the Middle East. The most well-known Byzantine missionary is Cyril, who, alongside his brother Methodius, spread Christianity and translated the Bible into Slavic languages, particularly Old Church Slavonic.

Similarly, in the late Roman Empire (4th-5th century), Roman missionaries played a crucial role in spreading Christianity beyond the borders of the empire. As the Roman Empire expanded, so did the influence of Christian missionaries. Notable Roman missionaries include Peter and Paul, who were instrumental in establishing early Christian communities in Rome and spreading the teachings of Jesus Christ. Furthermore, various Roman emperors, such as Constantine the Great, actively promoted and supported the spread of Christianity throughout the empire and neighboring regions.

Overall, both Byzantine and Roman missionaries contributed significantly to the spread of Christianity beyond their empires' borders, ensuring the religion's global reach.