Answer :
The answer is D, for the treaty of Portsmouth. Extra note: he was the first American to win a Nobel Peace prize.
Answer:
d) for the Treaty of Portsmouth
Explanation:
The Treaty of Portsmouth (September, 1905) was the treaty that formally set the terms that ended the Russo-Japanese War (1904–05) and in which Russia recognized Japan as the dominant power in Korea. In such negotiations, the American President Theodore Roosevelt was an important key to mediate and finally end the conflict, and this mediator role made him become the first American President to ever win the Nobel Prize for Peace.