This example displays a world map rendered as an SVG using React and D3 v5. The map shows country boundaries and a background sphere, styled with a teal fill and light gray strokes. It loads geographic data from a TopoJSON file via the `world-atlas` package, converting it to GeoJSON with topojson’s `feature` function. The projection and path generation rely on `d3.geoEqualEarth` and `d3.geoPath`, while React components manage the rendering and data loading through a custom `useData` hook.