Answer:
Napoleon Bonaparte
Step-by-step explanation:
The metric system was established in France during the French Revolution. At that time, the ruler of France was Napoleon Bonaparte. The French National Convention, under the influence of the Enlightenment ideals and the need for standardization, adopted the metric system as the official system of weights and measures in France in 1799. Napoleon, who came to power as First Consul in 1799 and later declared himself Emperor in 1804, played a significant role in promoting and implementing the metric system throughout France and other parts of Europe under French control.