Answer:
Simply put, a "turning point" is when things were going one way before an event and they were going the other way after that event. The Battle of Britain was a turning point in WWII in Europe in the western theater because prior to that Germany was going where it wanted to go and defeating everyone in the their path.
Explanation:
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Answer: China, Rome, India, Persia, Egypt
Explanation: All of these countries were frequent users of the silk road to partake in trade of goods and horses, as well as conquering purposes in the case of China especially.
Mare Nostrum means Our Sea, which in the the case of the Romans, it was the Mediterranean Sea they were referring to. They would have used this term because of how important the Mediterranean Sea was to them in all ways.