The correct answer is B) Austria began to see Prussia as a greater threat than France.
<em>Austria shifted alliances in the mid-1700s because Austria began to see Prussia as a greater threat than France.
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After the first Treaty of Versailles, Austria reviewed his foreign policy and realized that Prussia was a greater threat than France. So in 1756, Austria made an alliance with France after many years of having the British as its allies. Previously, Austria had lost some territory in war, so it preferred to change its foreign policies in order to protect its interest in further conflicts.
All are possible except for C)
I would go with B) alot of build up for this.
The answer is European nationalism
The most important reason for the collapse of Rome was the failure to actually integrate what they conquered. When Roman soldiers conquered new lands, it was rare that they ever attempted to force their culture, ideals, or laws upon the natives and barbarians. Thus, when the Empire began suffering internal struggles, the natives they had conquered decided to take action, which lead to the swift collapse by barbarian invasion from all sides. It's hard to pick a LEAST important reason, seeing that there were many of them, but I suppose a contender would most likely be the common refusal of the Empire to even acknowledge that barbarians were rising. On the outer edges of their territory, in places like Gaul and Morocco, the Roman government was reluctant to even recognize the threat of the barbarians, thinking that even accepting that these barbarians were causing trouble would weaken their prestige in the public eye.
