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Maria Theresia Walburga Amalia Christina |
Maria Theresa Walburga Amalia Christina (German: Maria Theresia [maˈʁiːa teˈʁeːzi̯a]; 13 May 1717 – 29 November 1780) was the only female ruler of the Habsburg dominions and the last of the House of Habsburg. She was the sovereign of Austria, Hungary, Croatia, Bohemia, Transylvania, Mantua, Milan, Lodomeria and Galicia, the Austrian Netherlands and Parma. By marriage, she was Duchess of Lorraine, Grand Duchess of Tuscany and Holy Roman Empress.
She started her 40-year reign when her father, Emperor Charles VI, died in October 1740. Charles VI paved the way for her accession with the Pragmatic Sanction of 1713 and spent his entire reign securing it. Upon the death of her father, Saxony, Prussia, Bavaria, and France all repudiated the sanction they had recognised during his lifetime. Frederick II of Prussia (who became Maria Theresa's greatest enemy for most of her reign) promptly invaded and took the affluent Habsburg province of Silesia in the nine-year conflict known as the War of the Austrian Succession. Over the course of the war, despite the loss of Silesia and a few minor territories in Italy, Maria Theresa successfully defended her rule over most of the Habsburg empire. Maria Theresa later unsuccessfully tried to reconquer Silesia during the Seven Years' War.