For a putative academic, your grammar is astoundingly poor and your knowledge of history remarkably weak. “To historians later it all makes sense…..” “when in fact America is currently great, according to pretty well any statistics.”

No serious historian thinks that the assassination in Bosnia was the real cause of WW I. Universally, they recognize that it was merely a provocative act that served as an excuse.

Finally, to suggest that the EU “has prevented a war in Europe for longer than ever before” is chimerical. NATO, perhaps has contributed to this, but certainly the standoff between the US and the SU were the reasons we did not see a war in Europe.