The ties with Bohemia revived Silesia's economy, which until then mainly profited from the High Road, an important trans-European trade route. According to the wishes of the House of Luxembourg Breslau, Silesia's main emporium, established new contacts with Budapest and Venice to the south, Toruń and Gdańsk to the north and became a member of the Hanseatic League. The economic prosperity supported the development of a rich municipal culture, which found its expression in important religious and secular buildings as well as the attendance of many Silesians at the surrounding universities of Kraków, Leipzig and Prague (the most popular until the 1409 decree of Kutná Hora).