This interactive world map displays country boundaries using a natural Earth projection, with countries rendered in light green and hovering states highlighted in red. The visualization loads geographic data from the world-atlas TopoJSON dataset, merging it with a TSV file to map ISO numeric codes to country names for tooltips. Built with D3 v5, it uses `d3.geoPath` and `d3.geoNaturalEarth1` for projection and path generation, while `topojson.feature` converts the TopoJSON topology into GeoJSON features. The sphere background appears blue, with semi-transparent black strokes outlining each country.