Using graphic elements like this world map, to see in which countries or regions of the world the surname Gerdau is more common, is of great help.
The quantity of people with the surname Gerdau that we can find in each country can help us discern the origin of the surname Gerdau, as logic tells us that the place with the most people surnamed Gerdau will be the country or area of origin of the surname Gerdau.
Locating at a single glance the countries where the surname Gerdau is more abundant, as well as the areas of the globe where there are hardly any people with the surname Gerdau, is of great utility for individuals interested in surnames, and specifically in the surname Gerdau, as it allows them to quickly and easily visualize the data and its distribution."