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When did Bohemia become a hereditary kingdom within the Holy Roman Empire?
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Bohemia became a hereditary kingdom within the Holy Roman Empire in 1198.12
While earlier rulers, such as Vratislav II, had been granted the title of king as a personal, nonhereditary privilege, it was the Přemyslid ruler Otakar I who successfully secured the royal title for himself and his descendants in 1198.132