The Columbian Exchange greatly affected almost every society on earth, bringing destructive diseases that depopulated many cultures, and also circulating a wide variety of new crops and livestock that, in the long term, increased rather than diminished the world human population.
The Assyrians were invaded since they controlled the Fertile Crescent
Aristotle tutored alexander the great and went to plato's academy in athens, greece.
One role that geography played in helping the Roman empire was by providing natural barriers to invasions.
<h3>How did geography help the Roman empire?</h3>
The Roman empire in its early stages, was able to take advantage of natural barriers to protect it from invasion by hostile tribes and kingdoms.
For instance, the Alps in Northern Italy made it difficult to invade Roman areas in Italy from the North. And the fact that Italy was a peninsular meant that to invade it, one would have to invade by sea where the Roman navy was stationed.
Find out more on natural barriers to invasion at brainly.com/question/1908914
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