Although there were many underlying reasons for the European nations to break out in war, the early days of the fighting between Serbia and Austria caused the expansion of the war, along with the alliances which failed to remain peace and actually contributed to the war. Also, the possibility of remaining neutral and prepared is always another alternative, rather than forming allies that may require the nation to enter a war. A war between Serbia and Austria caused 7 nations to enter the fighting, justified by the reason of supporting alliances previously formed and underlying conflicts.
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