This choropleth map shows U.S. state crime rates per 100,000 people, with states colored on a sequential orange-red scale based on values loaded from a CSV file. The visualization uses D3 v7 and TopoJSON to render state boundaries via `d3.geoAlbersUsa` projection and `d3.geoPath`, while encoding data with `d3.scaleSequential` and `d3.interpolateOrRd`. A canvas-generated gradient legend with a `d3.axisBottom` scale accompanies the SVG map, and hover interactions display crime values and state names in a tooltip.