This visualization presents a world map using the Natural Earth projection, displaying country boundaries as paths with graticule lines and an outline. It fetches geospatial data from the visionscarto-world-atlas TopoJSON file and converts it to GeoJSON features using `topojson.feature`. The map is rendered with `d3.geoNaturalEarth1`, `d3.geoPath`, and `d3.geoGraticule`, with countries drawn as filled paths with white strokes. The visualization adapts to the full browser window size, using D3’s data join pattern to update the SVG elements.