Pain in abdomen or muscles, coughing blood, fever, chills, fatigue, vomiting, etc. Google symptoms of the plague. Also if you have a history book there is probably specific symptoms they're looking for to answer this.
The answer to this question is:
A-"France and Spain"
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The south had a smaller army, and less technological advances than the north. But they had better commanders and they knew the land better than the north.
The North had a smaller war spirit and they didn't know the land. But they had bigger armies with the support of many slaves, they also had better technological advances than the south.