Bohemia was a kingdom part of the HRE. Its capital is Prague. The history of Bohemia started to diverge when the Mongols didn't harass the country 1241/42. Because of accumulated little changes, Vladislav, older brother of Otakar Przemysl, did not die in 1247, but would have a son in 1251 and became king in 1253. Otakar insisted however, that the Przemyslid lands were split and he'd become duke of Moravia. Vladislav also inherited Austria, where the last Babenberger duke had been defeated and killed by Bela IV of Hungary. And 1254, he'd gain upper Styria, when he divided the land with Hungary. One year later, he died however, and Otakar became regent for his nephew Wenzel / Vaclav II.