Karvinasstrad, alternatively known as the Karvina Empire or Great Karvina Empire, was a large empire that originated in the Belyrian region. It was founded in the year XXX Re by its first ruler, Kroskaw of Velwend, after his successful unification of the Belyrian sub-continent. It was the first Pretheyan empire to be ruled by a dynasty of hereditary monarchs, rather than through some sort of meritocracy or theocracy as prior great states had been, and its conquests would contribute greatly to the establishment of feudalism throughout the continent. At its height, the Karvina Empire controlled the entirety of the Belyrian sub-continent, the region of Seiforh, the Asutoan peninsula, and much of Ressengia, making it the second largest contiguous empire in history; smaller than only the Grannrormrlen prior to the secession of the Eastern Wyrmrealm. Karvina rule is credited with popularising the usage of a money-based economic system throughout the continent, as well as for the spread and adoption of the Shahru religion in southern and parts of western Pretheya. It was also the longest-lasting of any continental empire; existing for just under three centuries between its formation in XXX Re and its eventual destruction at the hands of the Intersedran Empire in the year XXX Re.