What was unique about the russo-japanese war?
a) it was the first time an asian and european nation had fought in a war.
b) it was the first european war fought in an asian country or territory.
c) it was the only time the two nations would be involved in any kind of war.
d) it was the first time an asian nation had defeated a european one in war.

D. It was the first time when an Asian nation had defeated a European one in War, is the correct answer.

Explanation:

Russo-Japanese war was fought between 1904-1905. Most of the fighting happened in northeastern China. this war is considered to be a naval conflict. The war was fought as Japan was afraid that it would hamper the plans of creating its sphere of influence in Manchuria and Korea as Russia has been following an expansionist policy since 16th century and wanted to get a port in the Pacific ocean as it didn't had any warm water ports. The Japanese government considered Russian plans to be a thereat. The unique thing about this war was that it was the first war in which a major European power was defeat by the Asian nation.

i believe it d) heterogeneous

d is the answer. leo should include the source.