Q. Which of the following is also known as the "Seven Weeks War"?
Answer: Austro-Prussian War
Notes: The Austro-Prussian War or Seven Weeks' War, also known as the German Civil War or the Unification War or the War of 1866 or the Fraternal War or the Brother's War, happened as part of the wars of German unification, was a war fought in 1866 between the Austrian Empire and the Kingdom of Prussia, with each also being aided by various allies within the German Confederation. Prussia had also allied with the Kingdom of Italy, linking this conflict to the Third Independence War of Italian unification. The Austro-Prussian War was part of the wider rivalry between Austria and Prussia and resulted in Prussian dominance over the German states. The major result of the war was a shift in power among the German states away from Austrian and towards Prussian hegemony. The war also resulted in the Italian annexation of the Austrian province of Venetia.