Name each country that has not: had a civil war and recovered; taken control through a civil war; been created as a result of an unresolved civil war; or was created through a military revolution (which is just a civil war where the rebels won).
Source: Countries that don't appear on This Wikipedia List.
A coup d'etat is not considered a civil war as long as there was no military conflict. A purposeful split, like what happened with the Roman Empire, also wouldn't count, and a war between those two nations later on would be a conventional war.
Similarly, a country which "formed" by rebelling from a foreign occupier, such as colonies which fought for freedom, are not considered to have had civil wars. This does not count for countries which became core territories for their occupier, such as Catalonia in Spain.
For the purposes of this quiz, countries can inherit civil wars from a parent country if it makes sense. For example, Russia is considered the same country as the Soviet Union, since it was the dominant republic of the USSR. Today's China; however, would not be considered the same as the Republic of China from the early 20th century.
Gonna be honest I don't remember what was going through my head when I made this but it was poorly researched and it could really use an update. Maybe I'll do that sometime.