Maria Theresa Walburga Amalia Christina (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 started her 40-year reign when her father, Emperor Charles VI, died in October 1740. 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.
Maria Theresa reigned for 30 years.
Evaluate the veracity of the claim: "Maria Theresa reigned for 30 years." based on the evidence: "Maria Theresa Walburga Amalia Christina (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 started her 40-year reign when her father, Emperor Charles VI, died in October 1740. 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.".

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Evaluate the veracity of the claim: "Maria Theresa reigned for 30 years." based on the evidence: "Maria Theresa Walburga Amalia Christina (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 started her 40-year reign when her father, Emperor Charles VI, died in October 1740. 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.".

Options: 

 - supported

 - refuted

 - not enough information
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