congresses corruptpractices economicconditions environmentalaspects environmentalpolicy ethnicconflict history identitypolitics internationalbusinessenterprises minorities nigeria oilpollutionofwater oilspills petroleumindustryandtrade politicalaspects politicsandgovernment protestmovements ruralpoor shellinternationalpetroleumcompany socialconflict socialresponsibilityofbusiness warandsociety