Julius Popper, a commercial exploiter of this substance, led the Selk’nam genocide in Tierra del Fuego. In a ritual of the Muisca people, a new king would be covered in this substance before diving into Lake (10[2])Guatavita. The name ‘Cibola’ was attached to a province reportedly containing (10[1])seven cities named for this substance. (10[1])Walter Raleigh made two expeditions (-5[1])to Guyana in search of a place alternatively named for this substance. (10[1])This substance (10[1])names the law that abolished slavery in Brazil. (10[2])The myth of El Dorado sparked quests for cities (10[1])rich in this substance. For 10 points, what precious metal sparked namesake “rushes” in places like California? ■END■