What country did rock bands Screaming Trees and Porno for Pyros originate in? 
Screaming Trees: Screaming Trees was an American rock band formed in Ellensburg, Washington in 1985 by vocalist Mark Lanegan, guitarist Gary Lee Conner, bass player Van Conner and drummer Mark Pickerel. Porno for Pyros: Porno for Pyros were an American alternative rock band formed in Los Angeles, California in 1992, following the break-up of Jane's Addiction.
American alternative rock band