Sui Dynasty: AD 589 to 618

The Sui Dynasty which managed to reunite the country in 589 after nearly four centuries of political fragmentation, played a role more important than its length of existence would suggest. The Sui brought China together again and set up many institutions that were to be adopted by their successors, the Tang. Like the Qin, however, the Sui overused their resources and collapsed. Also similar to the Qin, traditional history has judged the Sui somewhat unfairly, as it has stressed the harshness of the Sui regime and the arrogance of its second emperor, giving little credit for the Dynasty's many positive achievements.