create a google map with overlay the svg image of the countries indicated and the various places to display
create a svg image of a country with the relative places to display.
https://www.npmjs.com/package/ng-world-map-svg
*** It turns out that you do need an API-key to be able to use this one: "you need a project with a billing account".
Here we investigate various map apis (e.g. google maps), sign up for one and display an (initially blank) world map.