Friedrich's regency over Tirol and the scattered Habsburg territories in southwestern Germany and in the Alsace referred to collectively as Vorderösterreich began in 1402. The early years of his reign were marked by external and internal conflicts. He had to overcome the opposition of the local nobles in 1406/07, and had to deal with the independence movement in Appenzell, which became a protectorate of the Old Swiss Confederacy in 1411.
In 1314 Albert's son, Frederick, was chosen German king in opposition to Louis IV., duke of Upper Bavaria, afterwards the emperor Louis IV., and Austria was weakened by the efforts of the Habsburgs to sustain Frederick in his contest with Louis, and also by the struggle carried on between another brother, Leopold, and the Swiss.
Austria and Spain were thus divided, and, in spite of the efforts of the archduke Charles in the Spanish Succession War, were never again united, for at the battle of Mohacs, on the 28th of August 1526, Suleiman the Mohacs Magnificent defeated and killed Louis, king of Bohemia and its g g results.
But Frederick was unwilling to break with Russia, with whom he was negotiating the partition of Poland; Austria in these circumstances dared not take the offensive; and Maria Theresa was compelled to purchase the modification of the extreme claims of Russia in Turkey by agreeing to, and sharing in, the spoliation of Poland.
Frederick was born in Berlin on January 24, 1712, son of King FrederickWilliam I and grandson of Frederick I.
Frederick and his forces, aided only by financial assistance from Britain, which was at war with France, opposed the armies of Austria, Russia, Sweden, Saxony (Sachsen), and France.
Frederick made an alliance with Catherine II of Russia, in 1764, and by the first partition of Poland in 1772 he received Polish Prussia, exclusive of Gdańsk (Danzig) and Toruń (Thorn), thus uniting the regions of Brandenburg and Pomerania.