This example displays a choropleth map of Massachusetts, with each county rendered as a purple SVG path. The map uses a custom `d3.geoAlbers` projection, centered and rotated to focus on the state, with a high scale factor for magnification. County boundaries are drawn from TopoJSON data using `d3.geoPath` and `topojson.feature`. The visualization is built with React, which loads the geographic data asynchronously and passes it to SVG path elements.