Later, Mali, Sang Hai and Zimbabwe were also developed civilized countries. Timbuktu in Mali is a famous Islamic cultural center with extremely developed culture. Hundreds of thousands of manuscripts have been preserved so far, which shows the degree of cultural development.
Extended data
During the Tang Dynasty:
This period is the most developed period of Mayan civilization in America, and its achievements in astronomy and mathematics are at the leading level in the world. Although there is no unified country in Maya, many city-states are scattered, with strict social hierarchy, mature hieroglyphics and magnificent city scale. Hundreds of pyramids and temples painted with exquisite murals prove that the Mayans are by no means in primitive society, but have entered the mature stage of slave society.
Of course, the Maya's large-scale blood sacrifice to the living, excessive love for religion, failure to master iron, failure to invent wheels, failure to domesticate any kind of large-scale pack animals, and extensive use of stone tools and bone implements all make us think that they are primitive.
But we should not only look at their primitive side, but also look at their highly developed side to understand them objectively. We must change the stereotype that ancient Africa and America were vast grasslands, deserts or rainforests, and occasionally small houses with mud walls and grass roofs. Although ancient Africa was not as developed as medieval Asia and Europe, it does not mean that they only existed in primitive society.