A strong movement toward the use of the metric system in the U.S. during the 1970-1980 period lost momentum. Currently the U.S. is using dual measurements, where there is mixed use of the metric and inch-pound systems. A number of large industries and some smaller ones have converted to SI use. But, mainly due to lack of a mandate from U.S. voters, Congress has not pushed for a law making the metric system the sole measurement system in the U.S. However, as metric is the sole measurement language of most of the world, foreign customers buying U.S. products are gradually requiring that they be delivered labeled and produced in metric units; therefore, eventually, the chances are that the U.S. will become a metric nation.

The map in the clip is from 1971.

wow interesting

Its nice to stand out