This map shows countries, land masses, graticules, and geographic lines from the World Atlas TopoJSON and Natural Earth datasets. The map uses D3's `geoNaturalEarth1` projection rotated with `rotate([270,90,0])`, and renders via `geoPath` in SVG. Countries are filled with a translucent color, while the sphere and graticules are drawn, and a `mesh` provides interior boundaries. Hovering over a country reveals its name via an SVG `<title>` tooltip.