This interactive world map visualizes the Earth’s countries using a natural Earth projection, displaying the globe’s sphere, graticules, and landmasses with custom styling. Built with React and D3 v6, the visualization loads TopoJSON data from the `world-atlas` package and processes it using `topojson`'s `feature` and `mesh` APIs to extract country boundaries and interiors. The `d3.geoNaturalEarth1` projection and `d3.geoPath` render all geographic elements as SVG paths, while CSS classes define teal and gray color schemes for a polished aesthetic.