A state is an independent political unit that occupies a specific territory and controls its internal and external affairs. A nation is a -

i think that the answer is polishing peanuts

nations must cooperate to bring about and maintain world peace.

nations must not wage wars or commit war crimes in a desire to control other nations.

i think i know which options you have but if these aren't options let me know

civil disobedience, refusal to obey the demands or commands of a government or occupying power, without resorting to violence or active measures of opposition