This visualization displays a choropleth map of the United States, with state boundaries drawn as SVG paths. The code uses D3 v5’s `geoAlbersUsa` projection and `geoPath` to render geographic features from TopoJSON data loaded from the us-atlas repository. Each state shape is colored with a default fill, and hovering changes the fill color via CSS. State names appear as tooltips using SVG `title` elements, sourced from the TopoJSON feature properties.