This example shows an interactive orthographic world map built with D3.js, where hovering over any country highlights it in red and displays its name as a tooltip. The map renders as SVG using `d3.geoPath` and `d3.geoOrthographic` for the projection, with country boundaries drawn from TopoJSON data loaded from the world-atlas dataset. The visualization also supports zooming and panning through `d3.zoom`. Country names are matched to geometries using ISO numeric codes from a TSV file.