This example shows a simple world map rendered with D3.js, displaying country boundaries using data from the world-atlas TopoJSON dataset. Country shapes are drawn as SVG paths via `d3.geoPath` with a natural Earth projection, and hovering highlights each country in red. The code uses `d3.json`, `topojson.feature`, and appends `<title>` elements for each path, though it only logs data to the console. The page loads D3 v5, TopoJSON, and hexmap libraries, with a gray background and light blue countries.