I thought it would be implied that I’m speaking about modern times. The economic system is the msin driver in large societies, though. In Europe, prior to capitalism, the primary determinant was feudal interests.
Chimps don’t have war. They fight, but is every skirmish a war? Wars come from creating and wielding armies.
You are obviously wrong because you left out the entire USSR and what happened to Eastern Europe post WW2. Go read a history book!
Do you think the USSR and Eastern Europe were free from the tendencies of capitalism to create imperialist war? The only post-WWII wars in Eastern Europe were skirmishes by capitalist-funded nationalists (quasi-fascists) and the civil war in Yugoslavia exacerbated by NATO to balkanize the country. The wars that the USSR supported were all pre-existing national liberation movements against imperialist colonizers, and they nearly always entered after imperialists had thrown massive resources into oppression. For example, Vietnam.