This visualization displays estimated musical instrument sales per U.S. state using a choropleth map. It shows the geographic distribution of sales values, with a purple-to-green sequential color scale indicating higher and lower amounts. The map is rendered as an SVG using D3.js v7, loading U.S. state boundaries from TopoJSON via `topojson.feature` and projecting them with `d3.geoAlbersUsa` and `d3.geoPath`. Hover interactions are not shown; the code sets up a tooltip and color encoding based on the provided dataset.