This example renders a choropleth-style map of the United States using the Albers equal-area conic projection via `d3.geoAlbers` and `d3.geoPath`. It displays landmasses filled in black, state interiors outlined in red, and a cyan sphere background, relying on the `d3-geo` and `topojson` libraries to load and process US Atlas data from a CDN. The visualization is built with React, using SVG for rendering, and includes a graticule layer (blue) that is defined but not rendered in the final output.