Sovereign nation-states have the ability to complete all of the following activities EXCEPT: A. conduct day-to-day business B. enter into agreements with other nations C. set trade policies with other nations D. freely invade other nations

D. freely invade other nations

Explanation:

Sovereign nation-state is just a synonym of a country. It's an entity that has control over a certain area with its own ability to govern its people. Invading other nations is a direct violation of  that right to govern their own people.

If a country choose to invite another nation, that country might have to face the risk of punishment from international organizations such as the United Nations. They can either be embargoed by the members or even directly intervened by the soldiers from the United Nations.

the answer is d

Explanation:

aristocracy, timocracy, oligarchy, democracy, theocracy and tyranny

explanation:

united states government;