What treaty did the U. S. sign that recognized the metric system as a standard of measurement? Treaty of the Metre This is seince not history !

the Treaty of the Meter

Explanation:

In 1875, the United States solidified its commitment to the development of the internationally recognized metric system by becoming one of the original seventeen signatory nations to the Treaty of the Meter.

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the completion of the erie canal spurred the first great westward movement of american settlers, gave access to the rich land and resources west of the appalachians and made new york the preeminent commercial city in the united states.