<bmx-map>
A map drawn by the library, with no tile server and nothing fetched.
Hover or tab to the map, then use the arrow keys. Click countries to select them; click a group of cities to zoom in.
Change either side of zero, with names
A diverging scale colours growth and decline differently; labels="auto" names the countries there is room for.
Shapes of your own
Give any GeoJSON or TopoJSON - here, made-up sales territories - and colour them by category.
Every property, event and method: https://docs.binarymission.co.uk/webcomponents/bmx/bmx-map.html