The Kingdom of Bohemia, sometimes later in English literature referred to as the Czech Kingdom (; ; ), was a medieval and early modern monarchy in Central Europe, the predecessor of the modern Czech Republic. It was an Imperial State in the Holy Roman Empire, and the Bohemian king was a prince-elector of the empire. The kings of Bohemia, besides the region of Bohemia proper itself, also ruled other lands belonging to the Bohemian Crown, which at various times included Moravia, Silesia, Lusatia, and parts of Saxony, Brandenburg, and Bavaria.