This visualization displays a map of the contiguous United States, with each state rendered as a blue SVG path. Hovering over a state turns it red and updates a text overlay near the cursor, showing the state’s name and population from the GeoJSON data. The map uses `d3.geoAlbersUsa()` for projection and `d3.geoPath()` to draw shapes, while mouseover events trigger the text and resize a separate red circle in a second SVG, scaled by population. The data comes from the contiguous-usa.geojson source, and the interaction is built with React and D3 v6.