Complex sentence: The Kingdom of Bohemia (;;) was a country in Central Europe formally established in 1212 by the Golden Bull of Sicily issued by the Roman king and emperor Frederick II, although some former rulers of Bohemia enjoyed a non-hereditary royal title.
Split into simpler sentences: The Kingdom of Bohemia (;;) was a country in Central Europe. It was formally established in 1212 by the Golden Bull of Sicily issued by the Holy Roman Emperor Frederick II, although some former rulers of Bohemia enjoyed a non-hereditary royal title.