The Treaty of Copenhagen (or the Peace of Copenhagen) was signed in 1441 between the Hanseatic League and the Netherlands, ending the Dutch-Hanseatic War. The accord was developed after Christopher of Bavaria crushed a great peasant uprising in Northern Jutland. The treaty broke the attempted monopoly of Baltic trading routes by the Hanseatic League. Even though Hanseatic trade regulations did not change, the Dutch (with their larger trading vessels) increased their control on herring fisheries, the French salt trade, and the Baltic grain trade.