Catherine the Great by Robert K Massie
Robert K. Massie was born in Lexington, Kentucky, and studied American history at Yale and European history at Oxford, which he attended as a Rhodes Scholar. He was president of the Authors Guild from 1987 to 1991. His previous books include Nicholas and Alexandra, Peter the Great: His Life and World (for which he won a Pulitzer Prize for biography), The Romanovs: The Final Chapter, Dreadnought: Britain, Germany, and the Coming of the Great War, and Castles of Steel: Britain, Germany, and the Winning of the Great War at Sea.