Sir Francis Drake (c.  1540 – 28 January 1596) was an English explorer, sea captain, privateer, slave trader, naval officer, and politician. Drake is best known for his circumnavigation of the world in a single expedition, from 1577 to 1580. This included his incursion into the Pacific Ocean, until then an area of exclusive Spanish interest, and his claim to New Albion for England, an area in what is now the U.S. state of California. His expedition inaugurated an era of conflict with the Spanish on the western coast of the Americas, an area that had previously been largely unexplored by Western shipping.Elizabeth I awarded Drake a knighthood in 1581 which he received on the Golden Hind in Deptford. In the same year he was appointed mayor of Plymouth. As a vice admiral, he was second-in-command of the English fleet in the victorious battle against the Spanish Armada in 1588. After unsuccessfully attacking San Juan, Puerto Rico, he died of dysentery in January 1596.Drake's exploits made him a hero to the English, but his privateering led the Spanish to brand him a pirate, known to them as El Draque. King Philip II of Spain allegedly offered a reward of 20,000 ducats for his capture or death, equivalent to around £6 million (US$8 million) in 2015.