This interactive world map displays countries in green over a blue sphere, with countries highlighting red on hover. Built with React and D3 v5, the visualization uses `d3.geoEquirectangular` projection and `d3.geoPath` to render geographic boundaries. GeoJSON data is fetched from a GitHub gist and processed through TopoJSON's `feature` function. Styling via CSS classes controls sphere fill, country colors, and hover effects.