Fork of World Countries Tree
This visualization displays a hierarchical tree of world countries, organized by continent and subregion. A collapsible dendrogram layout uses horizontal links to connect parent nodes to their children, with country names rendered as text labels. The implementation uses d3.hierarchy and d3.tree to compute the layout, d3.linkHorizontal to generate the curved paths, and SVG zoom behavior to enable panning and scaling. Data comes from a local JSON file containing nested geographic groupings.