A world map of country boundaries is rendered as an SVG with a natural Earth projection, using a light-filled sphere with graticules overlaid as subtle gray lines and landmasses colored teal. Interiors between countries are drawn with a contrasting stroke. The visualization is built with React, using D3’s `geoNaturalEarth1`, `geoPath`, and `geoGraticule`, and derives geometry from the World Atlas TopoJSON via `topojson.feature` and `topojson.mesh`.