Respuesta :

Slayer219

Answer:

The USA, Liberia, and Burma (a.k.a. Myanmar)

Explanation:

These are the only 3 countries that don't use the metric system
3 countries don’t. At this time, only three countries—Burma, Liberia, and the US—have not adopted the International System of Units (SI, or metric system) as their official system of weights and measures."

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