This visualization displays a world map using the Natural Earth projection, with countries rendered in yellow and the ocean sphere in light blue. It loads country boundaries from the world-atlas TopoJSON dataset and converts them into GeoJSON features using the `feature` function from topojson. The map is drawn with `d3.geoPath` and `geoNaturalEarth1` from D3 v5, appended as SVG paths to a 960x500 canvas. Country strokes are semi-transparent black, creating subtle separation between landmasses.