Answer:
The biggest reasons the U.S. hasn't adopted the metric system are simply time and money. When the Industrial Revolution began in the country, expensive manufacturing plants became a main source of American jobs and consumer products.
United States customary units. U.S customary units is the system of units of measurement used to measure things in the United States. The system of Imperial units is similar and in some parts identical. Length or distance units include the inch, foot, yard and mile.
Most countries use the Metric System, which uses the measuring units such as meters and grams and adds prefixes like kilo, milli and centi to count orders of magnitude. In the United States, we use the older Imperial system, where things are measured in feet, inches and pounds.
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