A horizontal bar chart displays population density for EU member states, ordered from Malta at 1548 people per square kilometer down to Finland at 18. The visualization uses D3 v5 with `scaleLinear` and `scaleBand` to map density values to bar widths and country names to vertical positions. CSV data is loaded via `d3.csv`, and the chart renders as SVG rectangles with axes generated by `axisLeft` and `axisBottom`.