Somewhat more complicated as for some reason a couple of countries are missing from the wikipedia list (which this time includes territories), and some cross the 180th meridian. Hopefully a decent quiz anyway as colour formatting took a while! Please report any mistakes you find
Please allow shorts DRC, Trinidad...etc
If depencies should be included, also theese countries should include territories as their southernmost part:
UK (South Sandwich Islands)
Norway (Bouvet Island)
Morocco (Western Sahara)
If not, USA should not include American Samoa.
Reunion and Bonaire are integreted parts of France and Netherlands, and should been included as southernmost parts of France and Netherlands. On the other side, James Shoal ar only claimed, not controlled, by China, and should not been included; the southernmost point controlled by China is Cuarteron reef.
Except the things mentioned above, a very good quiz.