If im not mistaken, Belgium gained independence from the Netherlands and Morrocco is on the "countries who got independence from France" quiz (which I belive is by QM)
From the instructions: "Refers to countries which after independence were not incorporated into the colonial empires of other nations"
After gaining independence from Spain, Panama was later incorporated into Gran Colombia, hence invalidating it for this quiz.
(Whether that counts as being part of a "colonial empire" is perhaps debatable - that language in the instructions could possibly be tightened up a bit.)
You are right about Belgium. Apparently didn't spend much time on research when I first made this quiz.
After gaining independence from Spain, Panama was later incorporated into Gran Colombia, hence invalidating it for this quiz.
(Whether that counts as being part of a "colonial empire" is perhaps debatable - that language in the instructions could possibly be tightened up a bit.)