This example displays a choropleth map of the United States using an Albers equal-area conic projection. It shows land and state boundaries, with a graticule overlay and a distinct purple stroke for interiors. The visualization uses React to manage state and rendering, while leveraging `d3.geoAlbers` and `d3.geoPath` for projection and path generation. Data is loaded asynchronously from a TopoJSON file via `d3.json` and `topojson.feature` and `topojson.mesh`, and rendered as SVG elements.