Zhongshan
If you are looking for the page with the statistics about this polity you can find it here:All Statistics
Was a Chinese polity during the Warring States period.
Establishment
January 380 BC: Change based on available maps for the Spring and Autumn period and Warring States period.
Chronology
Interactive Chronologies with maps are available in the section Changes Navigation
Disestablishment
January 295 BC: In 306 BC, after the state of Zhao, under King Wuling of Zhao, finished a military reform, adopting the uniforms and tactics of the Hu nomads, they invaded Zhongshan. After ten years of war Zhao annexed them in 296 BC.
Selected Sources
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. Retrieved on March, 20th 2021 https://en.wikipedia.org/wiki/File:States_of_Zhou_Dynasty.png