Which of the following countries was
NOT colonized by Europe during the
1800s?

Answer:
none were colonized
Explanation:
even though some were, it was either earlier or later than the 1800s.
Answer:
Japan
Explanation:
Thailand was the only independent state in Southeast Asia, but had Britain's influence in the north and south and France in the Northeast and East.
Japan was not formally colonized by Europeans, but was a colonizer itself.
The European influence in Afghanistan refers to political, social, and mostly imperialistic