If Wisconsin is trading cheese with Ohio, and then Michigan becomes much better at producing cheese, this can harm the economy of Wisconsin. It should not be possible for Wisconsin to be harmed by trading with Michigan unless something weird is going on.
Was "Wisconsin" supposed to be "Ohio" in the second sentence? Or are you contrasting between Wisconsin trading with Ohio and Wisconsin trading with Michigan?
Comments
Eric Rogstad
Nm, the longer explanation later in the page answered my question.