This visualization shows the top 10 US states ranked by population density, displayed as a color-coded pie chart with a corresponding legend listing each state and its density in thousands. The chart is rendered as an SVG using D3.js v5, with slices generated by `d3.pie()` and `d3.arc()`, and colors assigned via `d3.scaleOrdinal()`. Data is loaded asynchronously from a CSV file, and density values are formatted with `d3.format`.