Elizabeth Petrovna (Russian:Елизаве́та (Елисаве́т) Петро́вна) (29 December [O.S. 18 December] 1709 – 5 January 1762 [O.S. 25 December 1761]), also known as Yelisaveta and Elizaveta, was the Empress of Russia from 1741 until her death. She led the country into the two major European conflicts of her time: the War of Austrian Succession (1740–48) and the Seven Years' War (1756–63). On the eve of her death, Russia spanned almost 6,250,000 square miles (16,200,000 km).