This example displays a world map using a natural Earth projection, with countries rendered as light green paths and the ocean as a light blue sphere. It loads geographic data from the World Atlas TopoJSON dataset at 110m resolution, converts it to GeoJSON using `topojson.feature`, and renders it with `d3.geoPath` and `d3.geoNaturalEarth1`. The D3 v5 selection and data join methods (`select`, `append`, `data`, `enter`) generate the SVG paths, with styling applied via CSS classes.