query: Who was the emperor of Austria during the Seven Weeks War?
passage: Austro-Prussian War
The pretext for the conflict was found in the dispute between Prussia and Austria over the administration of Schleswig-Holstein, which the two of them had conquered from Denmark and agreed to jointly occupy at the end of the Second Schleswig War in 1864. When Austria brought the dispute before the German Diet and also decided to convene the Diet of Holstein, Prussia declared that the Gastein Convention had thereby been nullified and invaded Holstein. When the German Diet responded by voting for a partial mobilization against Prussia, Bismarck claimed that the German Confederation was ended. Crown Prince Frederick "was the only member of the Prussian Crown Council to uphold the rights of the Duke of Augustenburg and oppose the idea of a war with Austria which he described as fratricide". Although he supported unification and the restoration of the medieval empire, "Fritz could not accept that war was the right way to unite Germany."[6]
passage: Third Silesian War
While the Seven Years' War was a global conflict among many belligerents, its Central European theatre turned on lingering grudges from the War of the Austrian Succession (1741–1748). The Treaty of Aix-la-Chapelle, which concluded the earlier war, confirmed Prussian King Frederick II's seizure of the region of Silesia from the Habsburg Monarchy through two previous Silesian Wars. The defeated Archduchess Maria Theresa of Austria nevertheless fully intended to retake the lost province and reassert Austria's hegemony in the Holy Roman Empire; after peace was restored, she set about rebuilding her armed forces and seeking out new alliances.