This example renders a choropleth-style United States map using SVG paths generated from TopoJSON data. It uses D3’s `geoAlbersUsa` projection and `geoPath` to convert geographic features into drawable paths, with light blue fills and grey borders. The map is built within a React application, though the visualization itself is handled imperatively by D3 v5, which appends the SVG elements directly to the document body. The source JSON comes from a remote gist containing US state boundaries.