History of the Republic of China in the context of Warlord era

The Warlord Era was the period in the history of the Republic of China between 1916 and 1928, when control of the country was divided between rival military cliques of the Beiyang Army and other regional factions. It began after the death of Yuan Shikai, the President of China after the Xinhai Revolution had overthrown the Qing dynasty and established the Republic of China in 1912. Yuan's death on 6 June 1916 created a power vacuum which was filled by military strongmen and widespread violence, chaos, and oppression. The Nationalist Kuomintang (KMT) government of Sun Yat-sen, based in Guangzhou, began to contest Yuan's Beiyang government based in Beijing for recognition as the legitimate government of China.

The most powerful cliques were the Zhili clique led by Feng Guozhang, who controlled several northern provinces; the Anhui clique led by Duan Qirui, based in several southeastern provinces; and the Fengtian clique led by Zhang Zuolin, based in Manchuria. The three cliques often engaged in conflict for territory and hegemony. In mid-1917, after Yuan's successor Li Yuanhong attempted to remove Duan as premier, the general Zhang Xun forced Li to resign and made a brief attempt to restore the Qing dynasty, which was quashed by Duan's troops. Feng became the acting president, but was forced to step down by Duan in late 1918 and was replaced by Xu Shichang. In mid-1920, the new Zhili clique leaders, Cao Kun and Wu Peifu, defeated Duan in the Zhili–Anhui War in an alliance with Zhang Zuolin. A power struggle broke out between Cao and Zhang which ended with Cao's victory in the First Zhili–Fengtian War in 1922. Cao was president until 1924, when during the Second Zhili–Fengtian War he was betrayed by his subordinate Feng Yuxiang, who joined with Zhang to stage a coup against Cao. Feng and Zhang shared power and recalled Duan to serve as president before Zhang removed them both in 1926; in 1927, he declared himself Generalissimo.

Feng Guozhang (simplified Chinese: 冯国璋; traditional Chinese: 馮國璋; pinyin: Féng Guózhāng; Wade–Giles: Feng Kuo-chang; 7 January 1859 – 12 December 1919) was a Chinese general and politician in the late Qing dynasty and early republican China who served as the acting president of China from 1917 to 1918. He had also served as the vice president from 1916 to 1917, the governor of Jiangsu from 1913 to 1917, and the governor of Zhili from 1912 to 1913. He emerged as one of the senior commanders of the Beiyang Army and was the founder of the Zhili clique, one of the main factions during the Warlord Era in China.

Feng was a first degree holder of the imperial examination and graduated from the Tianjin Military School. He served in northeastern China before and during the First Sino-Japanese War, and afterward was China's military attaché to Japan in 1895. His reports on the Japanese military reforms were brought to the attention of Yuan Shikai, who made Feng an officer in what later became the Beiyang Army. Feng rose through the ranks during the last decade of the Qing dynasty, serving as a division commander, the director of the military school for Manchu princes and nobles, and as the superintendent of the General Staff Council.

The United States ambassador to China is the chief United States diplomat to the People's Republic of China. The United States has sent diplomatic representatives to China since 1844, when Caleb Cushing, as commissioner, negotiated the Treaty of Wanghia. Commissioners represented the United States in China from 1844 to 1857. Until 1898, China did not have a system in place for the Emperor to accept the Letters of Credence of foreign representatives. From 1858 to 1935, the United States representative in China was formally Envoy Extraordinary and Minister Plenipotentiary to China. The American legation in Nanjing was upgraded to an embassy in 1935 and the Envoy was promoted to Ambassador Extraordinary and Plenipotentiary.

During the republican era, the United States recognized the Beiyang Government in Beijing from 1912 to 1928 and the Nationalist Government in Nanjing (and Chongqing from 1937 to 1945) from 1928 onwards. After the Communist Party established the People's Republic of China in mainland China in 1949 and the Kuomintang moved the Republic of China government from Nanjing to Taipei of Taiwan, the United States continued to recognize the Republic of China as the legitimate Chinese government and maintained its embassy in Taiwan. However, in 1973, the United States established a Liaison Office in Beijing to represent its interests in mainland China. In 1976, the Chief of the Liaison Office was promoted to the rank of ambassador. In December 1978, the United States severed official relations with the Republic of China and in January 1979, established formal relations with the People's Republic of China. The United States Liaison Office in Beijing was upgraded to an embassy on March 1, 1979. The American Institute in Taiwan was established in 1979 to serve as the unofficial United States representative to Taiwan, with the director of its Taipei Office taking the role of a de facto ambassador.

Yang Hucheng (traditional Chinese: 楊虎城; simplified Chinese: 杨虎城; pinyin: Yáng Hǔchéng; Wade–Giles: Yang Hu-ch'eng) (26 November 1893 – 6 September 1949) was a Chinese general during the Warlord Era of Republican China and Kuomintang (KMT) general during the Chinese Civil War. He was a main supporter of Zhang Xueliang during the Xi'an Incident in late 1936, when the two generals plotted to force Chiang Kai-shek to cease hostilities against the Chinese Red Army and agree to a Second United Front against Japanese incursions into China with the Chinese Communist Party. In retaliation of his involvement in the incident, Yang was forced into exile by Chiang and then imprisoned by the Nationalist spy agency Juntong for 12 years, before being killed along with two of his children, his secretary Song Qiyun and Song's wife and youngest son in September 1949.

Tang Jiyao (simplified Chinese: 唐继尧; traditional Chinese: 唐繼堯; pinyin: Táng Jìyáo; Wade–Giles: T'ang Chi-yao) (August 14, 1883 – May 23, 1927) was a Chinese general and warlord of Yunnan during the Warlord Era of early Republican China. He was military governor of Yunnan from 1913–1927.

Hsu Seu-Cheng or Xu Shuzheng (traditional Chinese: 徐樹錚; simplified Chinese: 徐树铮; pinyin: Xú Shùzhēng; Wade–Giles: Hsü Shu-Cheng; IPA: [ɕú ʂùt͡ʂə̄ŋ]) (11 November 1880 – 29 December 1925) was a Chinese warlord in Republican China. A subordinate and right-hand man of Duan Qirui, he was a prominent member of the Anhui clique.