If You Could Change One Historic Event Which One Would It Be?

@ffony why is that?

@Primnproper LLoyd George, Wilson and Clemençeau arbitrarily divided post WW1 Europe into countries (within borders that mostly persist to this day,) but with little or no regard to the mixture of ethnic & cultural antagonisms that would have to co-exist within those borders; or, failing that, would try to forcibly rerrange them in the name of sovereignty (political/ethnic/tribal.).

Sorry I haven't done well in trying to make a clear statement !