This interactive choropleth displays global countries in green on a blue sphere, with hover states that turn countries red. It renders map geometry using `d3.geoPath` and `d3.geoNaturalEarth1` projections, and adds zoom capabilities via `d3.zoom`. The data is loaded from the `world-atlas` package as TopoJSON and TSV files, which supply country boundaries and names. A `title` element shows each country’s name on hover. The visualization supports pan and zoom through the `zoom` API, applying affine transforms to the SVG group.