NELLIE PEYTON UNEQUAL access to wealth is one of the main causes of worsening violence in West Africa's Sahel, which has forced millions to flee their homes, according to conflict analysts. While Islamist groups are active in the troubled region, just south of the Sahara desert, the unrest is driven more by inequality than poverty or religious beliefs, found a study commissioned by the aid group Catholic Relief Services (CRS). "Community members are saying, 'We see people in the capital cities who have all this wealth but in these rural areas we don't have any of this'," said Patrick Williams,…