Austro-Italian ironclad arms race
Austria's defeat in the Seven Weeks War forced Austria to determine a new set of foreign and domestic policies for the future, as Austria's interests since the days of the Holy Roman Empire had primarily been found in Italy and Germany. The Empire thus reformed itself into the Austria-Hungarian Empire following the adoption of the Austro-Hungarian Compromise of 1867 (German: "Ausgleich"), which re-established the sovereignty of the Kingdom of Hungary and placed Hungarians within the Empire on an equal footing with Austrians. Under the "Ausgleich", Emperor Franz Joseph I would be crowned as King of Hungary, while a separate parliament at Pest with powers to enact laws for the lands of the Holy Crown of Hungary would be established.
Charles VII, Holy Roman Emperor
During the War of the Austrian Succession Charles Albert invaded Upper Austria in 1741 and planned to conquer Vienna, but his allied French troops under the Duc de Belle-Isle were redirected to Bohemia instead and Prague was conquered in November 1741. So Charles Albert was crowned King of Bohemia in Prague (19 December 1741) when the Habsburgs were not yet defeated. He was unanimously elected "King of the Romans" on 24 January 1742, also with the vote of George II, and became Holy Roman Emperor upon his coronation on 12 February 1742. His brother Klemens August of Bavaria, archbishop and elector ("Kurfürst") of Cologne, who generally sided with the Austria Habsburg-Lorraine faction in the disputes over the Habsburg succession, cast his vote for him and personally crowned him emperor at Frankfurt. Charles VII was the second Wittelsbach Emperor after Louis IV and the first Wittelsbach King of the Romans since the reign of Rupert of Germany.