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The metric system is the most commonly used system of measurement that utilizes the meter, liter, and gram as units of measurement for distance, volume, and mass. Other countries in the world use another system of measurement called the Imperial system of measurement. So few countries use it that they should really just switch to using the metric system.

The United States is the only western country that uses the Imperial system of measurement. Additionally, the eastern countries of Liberia, and Myanmar also use the Imperial measurement system. It’s very strange that there are only three countries in the world that use a different measuring system, and yet these three countries are so different from each other.