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.
Military history of Germany
In the War of Austrian Succession (1740–48) Empress Maria Theresa of Austria fought successfully for recognition of her succession to the throne. However, during the subsequent Silesian Wars and the Seven Years' War, King Frederick the Great (Frederick II) occupied Silesia and forced Austria to formally cede control in the Treaty of Hubertusburg of 1763. Prussia had survived the combined force of its neighbours, each larger than itself, and gained enormously in influence at the cost of the Holy Roman Empire. It became recognised as a great European power, starting a rivalry with Austria for the leadership of the German-speaking lands.