The Mara Salvatrucha gang originated in Los Angeles, set up in the 1980s by Salvadoran immigrants in the city's Pico-Union neighborhood who immigrated to the United States after the Central American civil wars of the 1980s.
Definition. The Sierra Club is the oldest grassroots environmental organization in the United States. The organization was founded in 1872 by a San Francisco group of professors, businessmen, and other professionals led by John Muir (Cohen 1985, 10).
The CO of a battalion or squadron is the battalion/squadron commander, usually a Lieutenant Colonel. The term is also used in the US Navy, Air Force, Marines, etc. A CO or conscientious objector is someone who, for religious reasons, will not handle any weapon. Many were Seventh Day Adventists, although other religions also held such beliefs. Most were assigned duties such as VA or other Hospital duties for two years in lieu of being drafted for the same period.