Alternative histories can be a lot of fun - or they can be teeth-grindingly dumb. Part of the trick, it seems to me, is to find a good pivot point - a specific thing that could have gone differently - and then carefully work through the implications. Done poorly, it devolves into a “Well, my Goths invented the Gatling gun” - “So what? My Romans allied with Godzilla!” kind of exercise (complete with the smell of burning plastic and the pop of Black Cats - not that I’d know anything about it); done well, it makes you wonder about why things turned out the way they did.

All this is a long-winded way of pointing you at a Strange Maps post on a map of the Republic of New Netherland - maps and alternative history - nice match. While I’m on the subject, C.M. Kornbluth’s Two Dooms is alt history that is definitely worth a read.