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In 18oos, he implemented a new metric system for measurement in his country. It was based on the system of kilogram and meter. For example, he modified metric pound to 500g instead of 489g.
After losing power, he spent the last six years of his life in confinement by the British on the island of Saint Helena.
Guess who?

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He was 5'7"
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Napoleon
Watch an episode of Crash Course on the man.