The economy declined, caused by the Hussite destruction and because trade avoided both Bohemia and Silesia due to the general insecurity. The new direct trading route between Leipzig and Poznań threatened Silesia's interests and was a reason for trade wars between Silesia and Poland. Breslau lost its staple right in 1515, and the trade on the High Road towards the Black Sea lost its importance after the Turkish occupation of Italian Black Sea colonies. The trade with Southeast Europe, especially Hungary, increased after the kings of Hungary became the overlords of Silesia, and the trade connections to Upper German cities also strengthened.