If you're talking about the U.S, I would focus on the swing states such as Michigan. Whichever political party I'm in, I would have a safe states (unless I was a bad person or everyone hates me). Safe states will vote for you so you don't need to focus too much on them. Swing states will get you extra electoral votes so they are crucial to winning.
the transport of goods. because it was a new highway people was on there and the goods that they were transferring would be delayed on both trading sides