This example displays a choropleth-style map of the United States, coloring each state with a uniform dark teal fill and a light stroke. Hovering over a state changes its fill to a pale cream, providing a simple interactive highlight. The visualization uses D3 v5’s `geoPath` and `geoAlbersUsa` projection, combined with TopoJSON’s `feature` method to parse state boundaries from a remote JSON file. The SVG rendering is styled via a linked CSS stylesheet, with hover effects applied through the `.states:hover` class.