Answer :

European peace has ended.

"Crime of the Ages" is a US political cartoon suggesting peace in Europe has ended and all involved are to blame and also believe it the other sides' fault.

The cartoon has all major players in World War I and each is pointing at another showing where the blame will lie. The end of the war will attempt to answer this question of blame as well. Ultimately, Great Britain and France will place the blame on Germany making them responsible for the war.