Jérôme Bonaparte thus received more attention since the famous "Treaty of Westphalia" which ended the Thirty Years' War a hundred and fifty years earlier in 1648. Thanks to these efforts by King Jerome, Kassel celebrated an enormous cultural upturn. However, Jérôme's expensive habits earned him the contempt of Napoleon. His court incurred expenses comparable to Napoleon's court (which oversaw a vastly larger and more important realm), and Napoleon refused to support Jérôme financially. In 1812, Jérôme was given command of a corps in the "Grande Armée", marching towards Minsk. Insisting on travelling "in state", Napoleon reprimanded Jerome, ordering him to leave his
War of the Spanish Succession was reliant on the so-called "Maritime Powers" (England and the Dutch Republic) and also a higher priority for them. By formalising religious divisions within the Empire, the [[Peace of Westphalia|1648 Peace of Westphalia]] weakened its integrity and by 1700, the larger German states were pursuing their own policies. [[Electorate of Bavaria|Bavaria]] allied itself with France while as King of Poland, [[Augustus II the Strong|Augustus of Saxony]] was fully occupied by the [[Great Northern War]]. To gain [[Frederick I of Prussia|Frederick of Prussia]]'s support, Leopold recognised him as King, with Prussia made an equal member of the Grand Alliance. [[George I