> Should do the redistricted map vs our house losses in NY, We lost areas we purposely redistrict to be in our favor.

So gerrymandering is only an abhorrent abuse of civil rights when the other team does it?

People doing stuff all the time doesn't mean it's legal. Historic stone walls are mentioned in RI law, it would be best to read them yourself to figure out exactly how changing them needs to be done, and also get your shit surveyed to figure out where the actual property line is. Does the deed state the wall is owned by both property owners?

> What part of the home buying process would cover that? Getting a survey? I guess people skip that if they think the area has been “stable” for a number of years.

Title insurance exists for exactly this reason. You may not get the land, but will be compensated by the insurance and they'll be the one fighting in court if it goes to that.

> If the prior owner ALLOWED him use the land to plant the trees, the criteria for AP is not met

But an easement may have been established, in which case they still might not be able to do anything to that part of the land.

Do you have title insurance?