This visualization presents a hierarchical tree of world countries, organized by continent and region, with the root node labeled "World." Data is loaded from a JSON file and rendered as a horizontal node-link diagram using D3 v5. The layout is computed with D3's `tree` and `hierarchy` functions, while `linkHorizontal` generates the curved connecting paths. The SVG-based visualization supports zooming via D3's `zoom` component, and text styling utilizes the Playfair Display font.