It's the other way around really! Languages have been in contact for thousands of years long before ancient and medieval times, so translators and interpreters were already extremely common. Here are some similar previous questions I've worked on:

I just read an article on wikipedia that said that the papal states came into contact with the mongols in the middle ages and they sent letters to each other, how could they translate the letters back then?

How powerful were translators during ancient, medieval or early modern times?

How would someone learn a foreign language in High Middle Ages?