This visualization displays a hierarchical tree of world countries, organized by continent and subregion, using a left-to-right dendrogram layout. The SVG rendering uses D3 v5’s `tree` and `hierarchy` functions to compute node positions, while `linkHorizontal` generates curved paths for parent-child connections. Country names appear as text labels with font sizes scaled inversely by depth. The data comes from a static `data.json` file, and the example is a fork that modifies layout and styling.