Answer:
B
Step-by-step explanation:
The Russo-Japanese war helped Japan establish itself as one of the most powerful imperialist powers. The Sino-Japanese war, whether the first or second, led China to new forms of imperialism. Both are examples of imperialism due to their brutal conquering and warfare.
While we could argue for industrialization, Japan was the one doing the most industrializing if we're talking about the Sino-Japanese war. The Chinese still had an emperor as its Heavenly Mandate and the country was battered from the warring warlords. The country also suffered due to the Opium Wars and the Boxer Rebellion. Japan on the other hand was an industrialized powerhouse, nothing like what China was at the time of the second war.