Fork of Let's make a map with D3.js!
This example displays a world map with countries rendered as light green filled polygons with subtle black borders, projected onto a blue sphere using a natural Earth projection. The visualization fetches geographic data from the world-atlas package and uses the `geoPath` and `geoNaturalEarth1` APIs from D3 v5, along with the `feature` function from topojson to process GeoJSON features. The countries and the background sphere are drawn as SVG paths, with styling defined in an external CSS file.