Did Britain or syria become christian first?

Britain became Christian before Syria, with the conversion of its people occurring primarily in the 4th and 5th centuries, notably through missionaries like St. Augustine in 597 AD. In contrast, Christianity began to spread in Syria much earlier, as it was one of the regions where the faith first emerged in the 1st century AD, with significant early Christian communities in cities like Antioch. Thus, while Christianity originated in Syria, Britain adopted the faith later.