League (unit)

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A league is a unit of length. It was common in Europe and Latin America, but due to its highly inconsistent definition, it is no longer an official unit in any nation. Derived from an ancient Celtic unit and adopted by the Romans as the leuga, the league became a common unit of measurement throughout western Europe. Since the Middle Ages, values varied between countries, ranging from 2.2 to 7.9 km (1.4 to 4.9 mi). It may have originally represented, roughly, the distance a person could walk in an hour.

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