Identify and State the Historical Significance of the Following

question 26

Short Answer

Identify and state the historical significance of the following:
-Pony Express

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Definitions:

Diameter

The length of a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.

Thickness

The dimension from one surface of an object to the opposite surface, important in determining material properties and suitability for particular applications.

Flatness Tolerance

A specification that defines the permissible amount of deviation from a perfectly flat surface.