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).
Starting or Joining a Book Club. A book club (sometimes called a 'reading group' or 'book group') is a group of people who get together on a regular basis to discuss books. Some clubs meet online, many meet in-person either in homes or public places such as a library, bookstore or cafe. There are so many reasons to be part of a book club.