This example shows an interactive world map that highlights countries in red on hover and displays country names as tooltips, with zoom and pan capabilities through the d3.zoom behavior. The visualization uses d3.geoNaturalEarth1 projection with d3.geoPath to render geographic features, sourcing country boundaries from the world-atlas TopoJSON dataset and matching names via TSV data. The SVG rendering includes a styled sphere background and country paths, with zoom transforms applied to a group element. Country names appear through SVG title elements appended to each path.