History mostly bores me. Usually about a bunch of men starting wars with each other.
The history that I was taught was that the US entered WWII after the Japanese bombed Pearl Harbor. The US joined WWI after the Germans kept attacking submarines and was trying to get Mexico to join forces with Germany.
Apparently it bores you too much--you've got it very wrong on WWI.
More helpful if you actually told me what you think is the correct answer. It's been a few decades since I did history.
Short history of last 150 years:
Great Britain colonized/fucked half of the world over the seas
France colonized decent size shitload.
Spain got bigger shitload but lost most of it.
Germany got almost nothing and was not happy about it but kept it to itself.
Russia got exactly zilch and was happy about it. (border acquisitions are not colonies)
Eventually Germany grew up their navy and started to challenge GB status and colonies. WW1 started, Serbian incident was just an excuse, Russia was a side show which ended with revolution and bloodless loss of most Russian more recent acquisitions. Lenin is a fucking hero in Finland because he let them go. He let baltic States go too but they are not that grateful because Stalin took them back later.
So British French and Germans were senselessly killing each other by all kinds of means until they got tired and Germany was formally declared a loser when US entered a war. Germany was "rewarded" with ridiculous and undeserved reparations. In reality all sides were fucking assholes and fucking losers.
Hence nazis! GB and France created conditions for rise of nazi in Germany and eventually WW2. French and british were pissing and pissing germans off until they voted for Hitler.
Reminds you of anything? I am talking about pissing off part.