It's a very simple cookie so it doesn't surprise me at all that it would be made in other places in the country and other countries all together. I'm sure back then, when these things were invented, many people experienced certain foods in their travels, and then when they went back home they claimed them as their own creation. Who would know back then? Travel was limited and communication as well. That could be why there are so many similar recipes in all of the countries, especially ones that border each other.