Step 1 : Introduction to the question “What does the “I” in the acronym “ZIP code” mean?“
…The term ZIP is an acronym for Zone Improvement Plan, and was introduced in 1963. Simultaneously with the introduction of the ZIP code, two-letter state abbreviations were introduced. Robert Moon, an employee of the post office, is considered the father of the ZIP code although he proposed using just three digits; he submitted his proposal while working as a postal inspector. In 1983, an extended ZIP+4 code was introduced; it included the five digits of the ZIP Code, followed by a hyphen and four digits that designated a more specific location.
Step 2 : Answer to the question “What does the “I” in the acronym “ZIP code” mean?“
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