By the 1270's, Czech King Ottokar II had amassed an empire that included, roughly, the Czech Republic, Silesia, most of Austria, Slovenia, and some northeastern bits of Italy.
IOTL, he lost it in a war with Rudolf of Hapsburg, Holy Roman Emperor, and Hungary. After defeating Ottokar in 1278, Rudolf took the former's Austrian possessions, marking the beginning of Hapsburg Austria.
But what if Ottokar, and not Rudolf, had won? Might Bohemia, instead of Austria, become the main great power of Central Europe? Could Austria itself have been Czechisized to some degree?
IOTL, he lost it in a war with Rudolf of Hapsburg, Holy Roman Emperor, and Hungary. After defeating Ottokar in 1278, Rudolf took the former's Austrian possessions, marking the beginning of Hapsburg Austria.
But what if Ottokar, and not Rudolf, had won? Might Bohemia, instead of Austria, become the main great power of Central Europe? Could Austria itself have been Czechisized to some degree?