Very cool! I made multiple maps like that for a setting at one time, and it was great fun ... I've been a lazier DM since then
Are the languages so similar to various European ones on purpose? (I know I've DMed games where I made players speak Common as a pidgin without complex tenses, to indicate that it's not a real language, and then used different languages we had in common for other languages in game ... it didn't go on for too long before we came to the conclusion that the Orks are obviously mutes (Nemci) and there's no sense even trying to parley with them )