In the example given, the “apostrophe S” is a contraction of “he has” not a possession indicator. The word “of” established the relationship between “Entire Pop

In the example given, the “apostrophe S” is a contraction of “he has” not a possession indicator. The word “of” established the relationship between “Entire Population” and “Maine.” The apostrophe S is redundant to the point of confusion, as if a word describing a class of things related to Maine were omitted in error, like maybe it was supposed to be “Entire Population of Maine’s Bricklayers and Sitar Players.” If one wanted to use a possessive noun then “Maine’s Entire Population.” https://www.grammarly.com/blog/possessive-nouns/ https://www.grammarly.com/blog/possessive-nouns/