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).
Lions Clubs International (LCI) is a secular, non-political service organization founded by Melvin Jones in 1917. As of April 2015, it had over 46,000 local clubs and more than 1.4 million members in over 200 countries around the world.eo Clubs are required to have a Leo Club Advisor, a member of the sponsoring Lions Club who attends meetings and provides general advice to the club. Lions International includes more than 144,000 Leo club members in 139 countries.