This visualization shows the hierarchical structure of world countries organized by continent and region, displayed as a horizontal tree layout. The visualization uses a branching network of curved links connecting country names, with node labels sized according to their depth in the hierarchy. Built with D3 v5, the code implements a tree layout with `tree()` and renders SVG paths using `linkHorizontal()`. The data originates from a remote CSV file containing internet speed statistics, which is fetched and parsed using D3's `csv()` method. The visualization supports zooming and panning through D3's `zoom()` behavior.