The Three Principles of the Peple, also known as the Three Great Principles, are the ideological and political program of the Chinese nationalist leader Sun Yat-sen (1866-1925), who advocates three principles of nationalism, democracy and socialism. It is portrayed as part of the drive for China to establish freedom, prosperity and create a powerful nation. Principles were originally conceived as slogans for Sun's revolutionary student group, the United League, one of the main forces in the Republican Revolution of 1911, when the rule of Qing dynasty was over.