Franz Joseph I was the last emperor of Austria.

False. Franz Joseph I reigned from 1848 to 1916, but the last Emperor of Austria was his grand-nephew Charles I (Karl I), who ruled from 1916 to 1918. After World War I, revolution swept the empire; Charles renounced participation in state affairs and went into exile, marking the end of the Habsburg monarchy and the Austro-Hungarian Empire. Remember it this way: “Franz forged the Dual Monarchy; Charles closed the chapter.” Franz Joseph oversaw the 1867 Austro-Hungarian Compromise and a remarkably long, turbulent reign that included the assassination of his heir Franz Ferdinand in 1914. The war that followed led to the empire’s collapse, making Charles I the final emperor.