Meanwhile , in China , the Tang faced serious crises caused by the An Lushan Rebellion and many other uprisings .
In the case of Silla , the nobility increasingly became independent and rebellions sprang up throughout the country .
In China , the Tang faced serious crises caused by the An Lushan Rebellion and many other uprisings .
In the case of Silla , the nobility increasingly became independent and rebellions sprang up throughout the country .