I learned how to create a map with only Anne Arundel County, which required me to find a JSON geofile of Anne Arundel County and convert it to the correct file format. It works, I hope I’m allowed to use the files I used to make the base map. I think I will be able to add other Anne Arundel County open data to the map in the future. I added the Anne Arundel County school-associated cases to the map to see if it rendered correctly. It does.
I’m not sure why the bottom of the map is cut off. I will have to explore that issue next.