 Complete the following phrase:  Under Selim and Suleiman the Magnificent, the Empire became a domit naval force, controlling much of the Mediterranean. The exploits of the Ottoman admiral Barbarossa Hayreddin Pasha, who commanded the Ottoman Navy during Suleimans reign, led to a number of military victories over Christian navies. Important naval victories of the Ottoman Empire in this period include the Battle of Preveza 1538; Battle of Ponza 1552; 