The land in Africa is so fertile, why are African children so hungry?

Africa's land is not as fertile as expected, but Africa's mineral resources are very rich. Due to physical geography and other factors, Africa is an arid and water-deficient region. In most areas, the seasons are drought and flood, and the growth of crops tends to be short-term. Corn has become its main crop. Common vegetables can only be grown in greenhouses, and most of them are grown by foreigners. The staple food of residents in most parts of Africa is rice, but they rely on imports and their eating habits tend to be Islamic. Most regions and countries in Africa have been recognized as the least developed regions by UNESCO, and some countries have been at war all the year round, resulting in their people living in dire straits and having no basic living guarantee. Due to the weak economic foundation, poor natural conditions and backward medical conditions, the average life expectancy of African population is less than 50 years, which is the reason for the abundant labor force in Africa. Introduce a country that is not in the news or textbooks. Africa is basically a country with capital ideas, so the gap between the rich and the poor is huge. In the same country, the richest people can buy planes, Hummers and live in luxury houses, while the poorest people can only sleep on the streets. This is the current situation of African society. Africans' understanding of the world is not worse than that of China, but the average education can't keep up. Similarly, because it is a capitalist country, private schools are for the children of the rich, and they can go to developed countries such as the United States and Europe for further study, and the poor. The patriotism of the African people is very strong, and they can "fight" you and me for a ball game. Although the cultural quality is generally poor, the social order in African countries is very good and there are no bad criminal cases.