This visualization presents a hierarchical tree of world countries, organized by continent and region, with each node labeled by name. Built with D3 v5, it uses the `tree` layout and `linkHorizontal` generator to draw the branching structure, while `zoom` enables panning and scaling. The SVG renders text labels with font sizes decreasing by depth, and the data comes from a local JSON file. The layout positions nodes with `d.x` and `d.y` coordinates from the hierarchy layout.