Sun yat-sen promoted nationalism in china because he
wanted china to develop better relations with other nations.
hoped it would strengthen the countryís imperial dynasty.
hoped it would instill a communist belief system in citizens.
wanted the chinese people to feel pride in their country.

Explanation:

Sun Yat Sen advanced nationalism in China since he built up a political logic which he utilized while in power called the Three Principles of the People.

This included patriotism, where China would be brought together as one, without the mastery of some other remote power; democracy and the general population's occupation, which was seen through a monetary point of view. Sun Yat-Sen promoted nationalism in China since he felt it would unite China and impel it forward making people to feel pride in their country.