This example displays an interactive world map rendered with SVG using the d3-geo-projection library, specifically the geoNaturalEarth1 projection. Countries from the world-atlas TopoJSON dataset are drawn as paths with d3.geoPath, each featuring a tooltip showing the country name. The map supports pan and zoom through d3.zoom, which applies a transform to the map group on events. Hovering over a country changes its fill color to red via CSS, while the sphere background uses a distinct blue fill.