In this world map, you can check at a single glance which countries have more people with the surname Mader. As you can see, it's effortless to notice which countries have a higher number of people carrying the Mader surname.
Locating at a single glance the countries where the surname Mader is more abundant, as well as the areas of the globe where there are hardly any people with the surname Mader, is of great utility for individuals interested in surnames, and specifically in the surname Mader, as it allows them to quickly and easily visualize the data and its distribution."