With the different ethnic groups here and around the world, you might not know all you thought u did...here is a fact we found while checking some languages / groups.
Polish (język polski, ['jɛ̃w̃zɨk ˈpɔlskʲi] ( listen), polszczyzna or simply polski, [ˈpɔlskʲi] ( listen)) is a West Slavic language of the Lechitic group. It is spoken primarily in Poland and serves as the native language of the Poles