The General Charter of Jewish Liberties known as the Statute of Kalisz was issued by the Duke of Greater Poland Boleslaus the Pious on 8 September 1264 in Kalisz. The statute served as the basis for the legal position of Jews in Poland and led to the creation of the Yiddish-speaking autonomous Jewish nation until 1795. The statute granted exclusive jurisdiction of Jewish courts over Jewish matters and established a separate tribunal for matters involving Christians and Jews. Additionally, it guaranteed personal liberties and safety for Jews including freedom of religion, travel, and trade. The statute was ratified by subsequent Polish Kings: Casimir III of Poland in 1334, Casimir IV of Poland in 1453 and Sigismund I of Poland in 1539. Poland freed Jews from direct royal authority, opening up enormous administrative and economic opportunities to them.