King Zhaoxiang of Qin
Reigning over 55 years, he was one of the longest-serving rulers during the Eastern Zhou Dynasty. Although making numerous policy mistakes during his later years, his aggressive territorial expansions were pivotal in consolidating the state of Qin as the dominant military powerhouse in the late Warring States period. It was the strategic dominance established during his reign that paved the way to Qin's eventual successful unification of China under his great-grandson, Ying Zheng.
Manchukuo
The Qing dynasty, which replaced the Shun and Ming dynasties in China, was founded by Manchus from Manchuria (modern Northeast China). The Manchu emperors separated their homeland in Jilin and Heilongjiang from the Han Liaoning province with the Willow Palisade. This ethnic division continued until the Qing dynasty encouraged massive immigration of Han in the 19th century during Chuang Guandong to prevent the Russians from seizing the area from the Qing. After conquering the Ming, the Qing identified their state as "China" (中國, Zhongguo; "Central Realm") and referred to it as "Dulimbai Gurun" in Manchu. The Qing equated the lands of the Qing state (including present day Manchuria, Xinjiang, Mongolia, Tibet and other areas) as "China" in both the Chinese and Manchu languages, defining China as a multi-ethnic state, rejecting the idea that China only meant Han areas, proclaiming that both Han and non-Han peoples were part of "China", using "China" to refer to the Qing in official documents, international treaties, and foreign affairs, and the "Chinese language" (Dulimbai gurun i bithe) referred to Chinese, Manchu, and Mongol languages, and the term "Chinese people" (中國人 Zhongguo ren; Manchu: Dulimbai gurun i niyalma) referred to all Han, Manchus, and Mongol subjects of the Qing. The lands in Manchuria were explicitly stated by the Qing to belong to "China" (Zhongguo, Dulimbai gurun) in Qing edicts and in the Treaty of Nerchinsk.