France certainly deserves its share of the blame. Not saying the Germans and Austro-Hungarians weren’t blameless neither. All three were in the wrong, and they had to ultimately drag Britain, and subsequently the US, into it.
Not to mention Britains desire to boot the Turks out of the Middle East. It probably would have been better had the Arabs stayed under Turkish rule, compared to what we have today over there.
The British post-war division of the former Ottoman Empire’s Middle Eastern possessions is what directly lead to our modern problems in that region, of course.