What were the characteristics of the different Chinese dynasties during this period

The questions are: What were the characteristics of the different chinese dynasties during this period(500-1500)? How was china similar and different to previous cultures? what was the role of islam in the arabic world? In what ways was the middle east linked to other regions? What are some important characteristics of african peoples and civilizations during this period(500-1500)? How were african peoples linked to each other and those outside the continent?