Explain ONE change Russia made in response to the Russo-Japanese war. 50 points answer quick

The costly and humiliating series of Russian defeats in the Russo-Japanese War left the Russian Empire demoralized, added to Russians' growing anger at the failed policies of Czar Nicholas II, and would fan the flames of political dissent that ultimately resulted in the overthrow of the government during the Russian War.

i believe the correct answer is option b. most eastern european nations joined nato.

though i could be wrong, option d. the eastern european nations were granted complete independence, would be another choice.

hope this ! : )