The russo-japanese war marked a significant shift in regard to imperial power trends in the early 1900s because

a) it was the first time that an asian nation defeated a western power in war.
b) japan relied on its alliances with china, manchuria, and india to win the war.
c) russia relied on its alliances with england, france, and germany to win the war.
d) the united states intervened and brought about a peaceful conclusion to the conflict.