Cao
If you are looking for the page with the statistics about this polity you can find it here:All Statistics
Was one of many small polities that existed during the Chinese Spring and Autumn Period. It originated before the Zhou Dynasty or at the beginning of its existence.
Establishment
January 1042 BC: The polity originated before the western Zhou period.
Chronology
Interactive Chronologies with maps are available in the section Changes Navigation
1. Events
January 770 BC: The polity is assumed to existed since the start of the Spring and Autumn period in 770 BC.
Disestablishment
January 486 BC: Change based on available maps for the Spring and Autumn period and Warring States period.
Selected Sources
Cho-yun, H. (1999): The Spring and Autumn period In Cambridge History of Ancient China, Cambridge University Press, pp. 545-586
Five hegemons of Spring and Autumn period. Retrieved on March, 20th 2021 on https://commons.wikimedia.org/wiki/File:Five_Hegemons.png
Gernet, J. (1996): A History of Chinese Civilisation, Cambridge (UK), p. 59
States of Zhou Dynasty, Wikipedia, 10 july 2017, https://de.m.wikipedia.org/wiki/Datei:States_of_Zhou_Dynasty.png
States of Zhou Dynasty. Retrieved on March, 20th 2021 https://en.wikipedia.org/wiki/File:States_of_Zhou_Dynasty.png
