Metric vs. Standard Mesurement
(vs. is the abbreviation of the word 'versus' with basically means 'to compare two things against each other')

Did you ever want to know how two different measuring systems came to be?  This is a fun video that explains how these systems were created and why the metric system is now used throughout most of the world because it is so much easier to use:  http://www.neok12.com/php/watch.php?v=zX7669666468430d0f4d4e45&t=Measurements

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