This fork of Curran Kelleher’s World Countries Hierarchy block shows a radial tree of geographic regions, with the root node labeled "SB" and leaves labeled Asia, Europe, and Africa repeated many times. The SVG visualization uses d3.cluster to compute the radial layout and d3.zoom for panning and zooming interactions. Node labels are sized by depth and rotated for readability, while links are drawn as cubic Bézier curves. The data is loaded from a local JSON file via d3.json.