This example presents an interactive world map rendered in SVG, where each country is filled with green and highlights red on hover. Built with D3 v5 and TopoJSON, it loads world-atlas data from unpkg and projects it using `geoNaturalEarth1` and `geoPath`. The map supports zooming and panning via `d3.zoom`, with tooltips showing country names extracted from TSV data. The background sphere is drawn separately in dark blue, demonstrating a simple yet interactive geographic visualization.