This interactive map displays world countries using a natural Earth projection, with hover states that highlight individual nations in red. The visualization loads geographic data from a world-atlas TopoJSON file and renders it as SVG paths, with country names appearing as tooltips. Built with D3 v5, it uses `d3.geoNaturalEarth1` for projection, `d3.geoPath` for path generation, and `d3.zoom` for panning and zooming. The map also includes a dark blue sphere background, while CSS styles control the country and hover fill colors.