War seems to have stopped in (Western) Europe though. That is until the Russians take advantage of the current power vacuum to start one, or a spark ignites between ethnic groups that haven't been around in large enough numbers until very recently.
On the other hand, Africa is at war today. See: article being discussed and [0].
[0]: https://en.wikipedia.org/wiki/List_of_conflicts_in_Africa#21...
But yes, wars stopped because after WW II, they decided the madness had to stop. That led to the formation of the EU. Countries that belong to the same economic group seldom go to war. ECOWAS serves the same purpose in West Africa.
Assuming you're an American, you should be blaming your govt. rather than Russia for the what's happening around that region. I know you won't believe it, but that doesn't change the facts.
There might be differen reasons than giving up on tribes. Afaik the biggest wars we had were totally not tribe related, but rather "Nation" and than "Race".
And the original tribes in central europe are loong gone, replaced by feudalism and christianity over 1000 years ago.
My point is that progress in Africa is hampered by unnecessary divisions between people. It's obviously not the only problem, but it's not helping, either.