From the Middle Ages, Jews made up a significant part of the community of the city of Lublin where they established the Talmudic Academy and a Hebrew printing house in the 16th century. In addition, the Jewish “Council of Four Lands” was set up in the city. For many years, the Jewish commune in Lublin became one of the most numerous and most affluent ones in the Commonwealth of Two Nations, greatly contributing to the economic development of the city. Lublin was also an important centre of Hasidic Judaism – a mystical branch of Judaism. The city is also where the famous Hasidic rabbi, Yaakov Yitzak of Lublin, also known as “The Seer of Lublin”, lived and was buried. The 1920s and 30s saw a strong development of the Jewish community in Lublin, when Chachmei Yeshiva Lublin, i.e. the Lublin School of Sages, was established.