As a result, France made no effort to block the election of Duke Francis, who was proclaimed Emperor Francis I on 13 September. Bolstered by this significant political victory, Maria Theresa continued her attempts to regain Silesia, only to be defeated once again at the Battle of Soor on 30 September. On 15 December, the Prussians forced Saxony out of the war with victory in the Battle of Kesselsdorf, leading to the Treaty of Dresden on 25th. Austria accepted Frederick's ownership of Silesia, while Saxony paid him an indemnity of one million crowns; in return, Prussia accepted the Pragmatic Sanction, acknowledged Francis as Emperor, and evacuated Saxony.