Cao, state – 487 bc. The State of Cao was a vassal state
The State of Cao was a vassal state in China during the Zhou Dynasty. The state was founded sometime in the 11th century BC by Cao Shu Zhenduo, a son of King Wen of Zhou and younger brother of King Wu of Zhou. With its capital at Taoqiu, the State of Cao covered roughly the area of modern-day Dingtao County,...
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