You can make use of the map visualisation in 2 ways. Either by plotting points on a map or by using a polygon.
1) for Creating a point map:
You will be needing the latitude and Longitude of a location. This Latitude and Longitude has to be used to create a point. Use this code to create a point: GeoMakePoint(Lat,Long)
Following the Video and it should help you create one:
2) you can even make use of a map by using the polygon information. you will be needing a KML file which has the boundaries of the country you would like to visualise.
Check this video:
Thanks and Regards,