Sun Yat-sen, Song Jiaoren, and others establish the Tongmenghui, a Republican, anti-Qing revolutionary organisation, in Tokyo, Japan.

Sun Yat-sen was a Chinese physician, revolutionary, statesman, and political philosopher who founded the Republic of China (ROC) and its first political party, the Kuomintang (KMT). As the paramount leader of the 1911 Revolution, Sun is credited with overthrowing the Qing imperial dynasty and served as the first president of the Provisional Government of the Republic of China (1912) and as the inaugural leader of the Kuomintang.

Song Jiaoren was a Chinese republican revolutionary, political leader and a founder of the Kuomintang (KMT). Song Jiaoren led the KMT to electoral victories in China's first democratic election. He based his appeal on the upper class gentry, landowners, and merchants. Historians have concluded that provisional president, Yuan Shikai, was responsible for his assassination on 22 March 1913.

The Tongmenghui of China was a secret society and underground resistance movement founded by Sun Yat-sen, Song Jiaoren, and others in Tokyo, Empire of Japan, on 20 August 1905, with the goal of overthrowing China's Qing dynasty. It was formed from the merger of multiple late-Qing dynasty Chinese revolutionary groups.

Republicanism is a political ideology that encompasses a range of ideas from civic virtue, political participation, harms of corruption, positives of mixed constitution, rule of law, and others. Historically, it emphasizes the idea of self-governance and ranges from the rule of a representative minority or aristocracy to popular sovereignty. It has had different definitions and interpretations which vary significantly based on historical context and methodological approach. In countries ruled by a monarch or similar ruler such as the United Kingdom, republicanism is simply the wish to replace the hereditary monarchy by some form of elected republic.