This bar chart uses circles to compare the proportion of foreign-born residents across seven European countries, with Luxembourg leading at 45.9%. The visualization employs D3 v5’s `scalePoint` and `scaleLinear` to map countries and percentages, and renders axes via `axisBottom` and `axisLeft` with tick formatting as percentages. Data is loaded from a CSV file, and SVG circles are positioned using the derived scales, with a rotated y-axis label and title included.