sentences:  The Trade routes for some time had been controlled by a powerful Denmark, which controlled and collected at the Sound in its territory.Sigismund III of Poland-Lithuania sought to wrest the Baltic Sea with its lucrative trade routes for himself and he repeatedly requested Swedish king Gustav Adolph to renounce his title of Swedish king as a prerequisite for a truce and peace negotiations.The Swedes saw through these delaying tactics by Sigismund III and so the battles and skirmished went on for years.