A pidgin language is a simplified form of communication that arises naturally when two groups lacking a common language need to interact. Such interactions must have been common in the ancient world, so I imagine some pidgins must have been spoken for the purposes of trade, hiring mercenaries, and various other endeavors.
Are there any records of pidgins partially based on Latin in the ancient world? What were the other languages? Are such pidgins thought to have existed then, or is it a more recent phenomenon?
Any insights to ancient communication across a language barrier are welcome. More specific follow-up questions are easier to ask once there is a better starting point; it just occurred to me that I have never heard of Latin-based pidgins but find it likely that they have existed. I suppose the most likely forms of evidence are inscriptions in mixed languages and direct mentions by Roman authors.