What was a major effect of the russo-japanese war? japan added manchuria to its territory. japan gained influence in nations such as manchuria and korea. russia defeated the japanese fleet. russia rose as a major competitor for power in east asia.

The correct answer is the second: "Japan gained influence in nations such as Manchuria and Korea".

The Russian-Japanese conflict happened in 1904-1905 and it was triggered by the imperialist wishes of the two contenders, who were both interested in the territories of Korea and Manchuria.

It is false that this conflict resulted in the annexation of Manchuria to Japan. In fact, this will not happen until 1931. Therefore the first option is incorrect.

The option "Russia defeated the Japanese fleet" is also false. Actually the Russian army  was defeated and this constituted the evidence of the weakness of the Russian Empire. Therefore this also discards the last option "Russia rose as a major competitor for power in east Asia"

The result of this conflict was the consolidation of Japan as one of the main power forces in east Asia and, what's more, from that moment on Japan would be present in the world stage. Moreover, Japan included the territories of Manchuria and Korea under its influence.

B

Explanation:

yes he did writing dots to make the answer