This bar chart displays country values using D3 v7, with each country represented as a vertical bar on an SVG canvas. The visualization uses `d3.scaleBand` for the x-axis, `d3.scaleLinear` for the y-axis, and `d3.axisBottom` and `d3.axisLeft` for tick rendering. Data comes from a static JavaScript array in `constants.js`. The chart includes rotated x-axis labels and an additional scrollbar implemented via a `foreignObject` element, though the scrollbar’s interaction is limited within the fixed-width SVG.