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 (10[1])into Lake Guatavita. (10[1])The name ‘Cibola’ was attached to a province reportedly containing seven cities named for this substance. (10[1])Walter Raleigh made two expeditions to Guyana in search of a place alternatively (10[1])named for this (10[1])substance. (10[1])This substance names the law that abolished slavery in Brazil. The myth of El Dorado (10[1])sparked quests for cities rich in this substance. For 10 points, what precious metal sparked namesake “rushes” in places like California? ■END■