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. The DRC's largest export is raw minerals, with China accepting over 50% of its exports in 2019. In 2019, DR Congo's level of human development was ranked 175th out of 189 countries by the Human Development Index. , around 600,000 Congolese have fled to neighbouring countries from conflicts in the centre and east of the DRC. Two million children risk starvation, and the fighting has displaced 4.5 million people.