Which nation established a protectorate in Korea?
A) France
B) Britain
C) Japan

Japan

Explanation:

In 1910, Korea was annexed by the Empire of Japan after years of war, intimidation and political machinations; the country would be considered a part of Japan until 1945. In order to establish control over its new protectorate, the Empire of Japan waged an all-out war on Korean culture.

d) iowa i believe is the answer