<prompt> Translate the following text to EnglishSweden ilikuwa imekuwa nguvu kubwa zaidi ya kijeshi katika Ulaya baada ya Vita vya Miaka Thelathini, na katikati ya karne ya 17 iliweka lengo lake la kupanua Poland.  <response>: Sweden had become the strongest military power in Europe after the Thirty Years War, and in the mid-17th century, it set its expansionist sights on Poland. 