When did Japan gain control of Korea prior to World War II? the First Sino-Japanese War
the Russo-Japanese War
the Second Sino-Japanese War
World War I

the Russo-Japanese War

Explanation:

The Russian-Japanese War of 1904-1905, caused by Russian and Japanese expansionism in the Far East, inflicted humiliating defeats on Russia at land and sea. The war contributed to domestic unrest in both countries, catalysing the revolution of 1905 in Russia. The rise of Japan also sent reverberations across the world.

to extend a country’s power and influence

"germany's geographic location was an advantage when it was on the offensive in the war because it was situated next to an extremely wide river, the rhine, which was difficult for the allies to cross."