This interactive visualization displays a world map using D3 and React, rendering Earth’s landmasses in green with country borders and graticule lines overlaid on a light gray sphere. The map is drawn using `d3.geoNaturalEarth1` projection and `d3.geoPath`, with geographic data sourced from the world-atlas TopoJSON file (countries-50m.json). Country interiors and borders are derived via `topojson.feature` and `topojson.mesh`, while React manages the SVG rendering and loading state.