9.2.1 first dynasty, Xia Dynasty

 China's first dynasty, Xia Dynasty in the 21st century B.C. marked a change from a primitive society to a slave society. Slave


society developed further during the Shang (16th-11th century B.C.) and the Western Zhou (11th century-770 B.C.) Dynasties.

his era was followed by the Spring and Autumn and Warring States periods (770-221 B.C.), and the transition from the slave society to feudal society.