This example demonstrates how to create a world map with D3.js, rendering countries as light-green SVG paths on a dark blue background. It uses the `geoMercator` projection and `geoPath` to convert geographic coordinates into SVG path data, while TopoJSON’s `feature` method extracts country boundaries from a world-110m dataset loaded from unpkg. The visualization focuses on a clean, minimal map with thin black strokes separating countries, making it a straightforward introduction to geo-spatial data visualization.