This example demonstrates how to create a world map using D3.js version 5, rendering countries as light green polygons with black strokes on a blue spherical background. The visualization uses a natural Earth projection via `d3.geoNaturalEarth1` and `d3.geoPath` to project geographic coordinates onto an SVG canvas. Country boundaries are loaded as TopoJSON from the world-atlas package and converted to GeoJSON using the `feature` function from the topojson library. The map displays 110-meter resolution country outlines, with the sphere filled in blue to represent oceans.