Salvadoran laborers load bags of freshly picked coffee beans destined for export at a privately-owned coffee finca in Santa Tecla, El Salvador, October 1, 1983. El Salvador's primary-export economic structure in the 20th century concentrated land ownership and income in the hands of a small economic elite. This oligarchy effectively marginalized the rural sector of the population by closing political and social arenas as well as economic, which resulted in high levels of support for guerrilla insurgents in certain departments of the country.