Why did theodore roosevelt win the nobel peace prize? he brought peace to the philippines as its governor. he worked out a “gentlemen’s agreement” with japan over immigration. he performed humanitarian efforts to free cuba from spanish rule. he negotiate an end to the russo-japanese war.

D. He helped negotiate an end to the Russo-Japanese war

The policy was created to prevent a European and Japanese monopoly of Chinese trade and markets. It provided protection of equal privileges among countries trading with China and pledged to protect Chinese territorial and administrative integrity from partition.