The History Network

The origins of the Great Northern War can be traced back to the Swedish involvement in the Thirty Years War and later in the the First Northern War of 1655-60 between Sweden and Poland. Outcomes of these conflicts made the Baltic Sweden's "internal sea". This antagonised Sweden's neighbours. Russian interests were greatly affected as the access to the Baltic Sea and its trade routes were now under threat from the Swedish Navy. Dur: 19mins File: .mp3