In the U.S. Post Office ZIP code system, what does “ZIP” stand for?

In the U.S. Post Office ZIP code system, what does “ZIP” stand for? [su_ad]
-Zone Identification Protocol
-Zero Incorrect Placement
-Zone Improvement Plan
-Zoning Incorporation Program
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Answer: The first known stapler was made in the 18th century in France for King Louis XV. Each staple was inscribed with the insignia of the royal court, as required. Legend has it that the ornate staples it used were forged from gold, encrusted with precious stones, and bore his Royal Court’s insignia. The growing uses of paper in the 19th century created a demand for an efficient paper fastener. Modern staplers can be traced back to a patent filed by Henry R. Heyl in 1877 for the first machine to both insert and clinch a staple in one step.

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King Louis XV

Louis XV, known as Louis the Beloved, was a monarch of the House of Bourbon who ruled as King of France from 1 September 1715 until his death in 1774. He succeeded his great-grandfather Louis XIV at the age of five. Wikipedia
Born: 15 February 1710, Palace of Versailles, Versailles, Yvelines, France
Died: 10 May 1774, Palace of Versailles, Versailles, Yvelines, France
Spouse: Marie Leszczyńska (m. 1725–1768)
Reign: 1 September 1715 – 10 May 1774
Regent: Philippe d’Orléans (1715–23)
Children: Louis, Dauphin of France, Adélaïde of France, MORE