Franz Joseph I of Austria
If Greater Germany was to prevail, the crown would necessarily have to go to Franz Joseph, who had no desire to cede it in the first place to anyone else. On the other hand, if the idea of a smaller Germany won out, the German crown could of course not possibly go the Emperor of Austria, but would naturally be offered to the head of the largest and most powerful German state outside of Austria—the King of Prussia. The contest between the two ideas, quickly developed into a contest between Austria and Prussia. After Prussia decisively won the Seven Weeks War, this question was solved; Austria lost no territories as long as they remained out of German affairs.
Treaty of Hubertusburg
Austria's resolve to repossess the rich province of Silesia, which had been lost to Prussia in 1748, was the major conflict leading to the Seven Years' War. Maria Theresa, Archduchess of Austria and Queen of Hungary and Bohemia, acquired the support of Russia, Sweden, Saxony, Spain, and France, with the specific aim of waging war against Prussia and its ally, Great Britain. It was King Frederick the Great of Prussia, however, who initiated the hostilities with his attack and capture of Saxony in 1756.