This bar chart displays the populations of the ten most populous countries, based on 2018 estimates from the United Nations World Population Prospects. The code uses D3 v5 to load the CSV data, scale the values, and render the chart as SVG elements. It constructs linear and band scales with `scaleLinear` and `scaleBand`, and draws axes via `axisLeft` and `axisBottom`. Population figures are multiplied by 1,000 after parsing.