The thing about Slavs and Slavic countries..

. It so happens that now only 2 Slavic states in the name mention straight to their Slavic roots. These are, of course, Slovakia and Slovenia. In the name of Poland we can guess its origin from Polan, 1 of the Slavic tribes, which is the backbone of the early Piast state. In the Serbs, we have an thought of a relation with the Serbs. Croats are frequently associated with White Croats