WORLD HISTORY

Detailed explanation-1: -In the late ninth century a disastrous harvest precipitated by drought brought famine to China under the rule of the Tang dynasty.

Detailed explanation-2: -Chinese historians have spent well over a thousand years trying to understand why the Han Dynasty collapsed. Over time they developed three main theories: 1) bad rulers; 2) the influence of empresses and court eunuchs over child emperors too young to rule by themselves; and 3) the Yellow Turban Revolt.

Detailed explanation-3: -This line from China’s classic novel Romance of the Three Kingdoms describes the changing nature of Chinese dynasties, which rise and fall in a pattern known as the dynastic cycle.