The correct answer is B) resentment toward Japanese foreign imperialism.
One of the sources of upheaval for the new Chinese Republic in the early 1900s was the resentment toward Japanese foreign imperialism.
There had been so much hate and resentment between these two nations due to the many incidents during history. In the early 1900s, Japan was considered a modern nation with strong industry, military, and economy, the opposite of China. Japan invaded the Ryukyu islands in 1870 to establish more control in the Taiwan area. Then, Japan defeated China with no problems in the First Sino-Japanese War in 1895. And by 1990, some Japanese troops were part of the Boxer rebellion. That is why the resentment toward Japanese foreign imperialism provoked upheavals for the new Chinese Republic in the early 1900s.