A horizontal bar chart displays population estimates for the ten most populous countries, using data from a CSV file. The visualization uses D3 v5 with `d3.csv`, `d3.scaleLinear`, `d3.scaleBand`, and `d3.axisLeft` to render SVG bars. Population values are multiplied by 1000 to reflect actual counts, and margins are applied to position the categorical y-axis and numeric x-axis.