I believe the correct answer is: The theory of universal
gravitation.
The famous anecdote of an apple falling from a tree and
striking the head of the young Sir Isaac Newton which stroke the great idea,
helped him come up with The theory of universal gravitation, as a concept and
ever present force.
To prevent a war in Germany but also to appease Hitler
Holy shoot, you just keep them coming!
Well first of all it consisted of Romans, rather than Greeks. It also depended much more on heavy infantry, which was organized into maniples of 120 men.
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