A world map rendered with D3 v5 uses a Natural Earth projection to display countries as filled paths with hover highlighting. The visualization demonstrates simple interaction techniques, including zooming via `d3.zoom` that applies a transform to the map group, and tooltip-like country names using SVG `<title>` elements. Country boundaries come from TopoJSON world-atlas data, while names are matched from a TSV file, with D3’s `geoPath` handling geometry projection.