This compact world tree uses a hierarchical layout to visualize a small dataset of continents and countries. The root node represents the World, with continents as blue circles and countries as green ellipses. Implemented with D3.js v7, it uses `d3.hierarchy` and `d3.tree` to compute node positions, with `d3.linkVertical` drawing the connecting links. The SVG is styled via CSS variables, and node shapes vary by type, while labels are added as text elements.