Name the largest medieval states in Asia, America and Africa. What were the features of the Middle Ages in these countries.

America. Across the continent during the Middle Ages, there were three states along the way: the Aztec empire, the Inca empire, and the Mayan city-states in Yucatan and Guatemala. The term “Middle Ages” hardly refers to them until the beginning of the 16th century, they lived their own lives, and then the Spaniards conquered them, from whom the Middle Ages had already essentially ended, the beginning of the earlier New Time and the era of great geographical discoveries.
Africa. The southernmost state there was Monomotapa in the territory of modern Zimbabwe. In addition, there was the Arab Caliphate in the north, the Mamluk Sultanate in Egypt and the Middle East (also related to Asia) in the XIII-XVI centuries. There was a fairly strong state of Songhai in West Africa. In Morocco in the XI century there was the Almoravid empire, it covered from central Spain to Senegal.
Asia. It was full of states: Sassanian Iran, the Delhi Sultanate, the empires of Genghis Khan, his heirs (the Chagatai, Hulagu and Yuan empires) and Tamerlane. Tang, Song and Ming empires in China. Medieval Japan (shogunate since 1192), the Joseon Empire in Korea from the end of the XIV century, the Pagan Kingdom in Myanmar in the XIII century.
Features of their Middle Ages: there were no parliaments, city government, universities, sometimes there was no feudalism in the European sense. Weak contacts with Europe in some of the listed countries and limited interest in the outside world, it was the Europeans who began to explore it in the XV-XVI centuries.