sentences:  The Democratic Republic of the Congo is extremely rich in natural resources but has suffered from political instability, a lack of infrastructure, corruption, and centuries of both commercial and colonial extraction and exploitation with little widespread development.Besides the capital Kinshasa, the two next largest cities, Lubumbashi and Mbuji-Mayi are both mining communities.DR Congo's largest export is raw minerals, with China accepting over 50% of DRC's exports in 2012.