sentences:  One of Sun's major legacies was the creation of his political philosophy of the Three Principles of the People.These Principles included the principle of nationalism (minzu, ), of democracy (minquan, ), and of welfare (minsheng, ).On 20 August 1905, Sun joined forces with revolutionary Chinese students studying in Tokyo, Japan to form the unified group Tongmenghui (United League), which sponsored uprisings in China.