This choropleth displays the contiguous United States with each state filled in a distinct color from the D3 categorical schemeDark2 palette. The map uses the geoAlbersUsa projection and renders SVG paths via d3.geoPath, while the state boundaries come from a TopoJSON file loaded from the jsdelivr CDN. Hovering temporarily changes a state’s fill to a dark maroon, revealing its name as a tooltip. The visualization relies on d3.scaleOrdinal to assign colors and the topojson.feature method to convert TopoJSON into GeoJSON for drawing.