This bar chart displays population data for six countries, sourced from a local CSV file, with each bar’s length proportional to the population value (scaled by 1,000). Using D3 v6, the code employs `d3.scaleLinear` for the x-axis, `d3.scaleBand` for categorical y-axis spacing, and `d3.axisLeft`/`d3.axisBottom` to render axes. The SVG is appended and styled via CSS, with margins applied to position the chart within a 960×500 viewport.