Population density in the European Union
A bar chart displays population density for countries listed in a CSV file, with each bar’s length proportional to the density value. The visualization uses D3 v5’s `scaleLinear` and `scaleBand` to map data to SVG rectangles, supplemented by `axisLeft` and `axisBottom` for labeled axes. Rendered as an SVG, the chart highlights the distribution of density across countries, with the data loaded asynchronously via D3’s `csv` method.