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 Sierra Club, one of the oldest and most notable environmental organizations in the US, was pleased with the decision to shut down the Monticello Power Plant. Bruce Nilles, Director of Sierra Clubâs Beyond Coal Campaign, stated âThe retirement of one of Americaâs dirtiest coal plants demonstrates once again that dirty coal canât compete against clean, renewable energy.