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| Date | Event |
|---|---|
| 1911 | Qing Dynasty collapses; Republic of China founded |
| 1915 | Japan issues Twenty-One Demands to China |
| 1916 | Yuan Shikai dies; Warlord Era begins |
| May 1919 | May Fourth Movement erupts in Beijing |
| 1921 | Chinese Communist Party founded |
| 1922 | Zhang Zuolin declares Manchuria independent |
| 1923-1927 | First United Front: KMT-CCP alliance |
| March 1925 | Sun Yat-sen dies; Chiang Kai-shek takes KMT leadership |
| 1926-1928 | Northern Expedition unifies China under KMT |
| 1927 | Japan adopts Positive Policy toward Manchuria |
| April 1927 | Shanghai Massacre; Chiang purges CCP |
| May 1928 | Jinan Incident; Japan and KMT troops clash |
| June 1928 | Kwantung Army assassinates Zhang Zuolin |
| 1928 | Zhang Xueliang allies with KMT; Manchuria rejoins China |
| 1928 | KMT national government established in Nanjing |
| September 1931 | Manchurian Incident; Kwantung Army seizes Manchuria |
| 1932 | Manchukuo established as puppet state |
| 1934-1935 | CCP's Long March preserves party leadership |
| July 1937 | Second Sino-Japanese War begins |
Warlord Era (1916–1928)
Period of political fragmentation after the death of Yuan Shikai, when military governors ruled regional territories.
Kuomintang (KMT)
Chinese Nationalist Party founded by Sun Yat-sen, also known as the Guomindang (GMD). Under Chiang Kai-shek's leadership from 1925, the KMT unified China through the Northern Expedition and governed as the national government from Nanjing until 1949.
Northern Expedition (1926-1928)
GMD campaign to end warlordism and unify China under central rule.