On this day, 257 years ago, on February 12, 1768 (December 24, 1767, the last emperor of the Holy Roman Empire and the first emperor of Austria, Franz II was born. Franz II (February 12, 1768-March 2, 1835), the last emperor of the Holy Roman Empire (1792 - 1806), and the first emperor of Austria (1804 - 1835, known as Emperor Franz I). The son of Leopold II, Holy Roman Emperor, and Queen Maria Louisa of Spain. By the time Frantz II became Holy Roman Emperor, the situation of German city-states was already very serious, and the Holy Roman Emperor had long lost his real power. The French Revolution and the rise of Napoleon Bonaparte exacerbated the division of German city-states, and the prospects for the empire were not optimistic. In view of this, within three months after Napoleon Bonaparte proclaimed himself emperor, Franz also claimed to be Emperor of Austria in response to Napoleon. Frants II launched five sacred alliances against Napoleon Bonaparte, and were defeated in the first four times. They greatly weakened Austria's national strength and indirectly led to the rise of Prussia in the future. In 1806, Napoleon Bonaparte dissolved the Holy Roman Empire. Frants II was forced to marry his daughter Maria Louisa to Napoleon Bonaparte in a marriage. Immediately after the fall of Napoleon, Frantz presided over the Vienna Conference and established the Vienna System and the Holy Alliance to restore the old "order" in Europe and offset the influence of Napoleon's propaganda of liberalism. After the fall of Napoleon in 1815, the "Three Emperors Alliance" formed by Franz II, Tsar Alexander I of Russia and King Frederick III of Prussia remained a bridgehead for forces obstructing progress in Europe. During Franz's reign, he reappointed Metternich as Prime Minister of Austria. The latter was not only the core and executor of the Vienna system, but also the main disseminator of mysticism. In this way, Austria restored its status as a major European power, deepened its penetration of German princes and strengthened its ties with the Kingdom of Hungary, all of which ultimately led to the establishment of the Austro-Hungarian Empire in 1867.