This bar chart displays the population of the ten most populated countries using UN 2018 data, with population values scaled by thousands. Horizontal bars are sorted by country name, with axis labels customized through the `axisLeft` and `axisBottom` APIs from d3. The visualization uses `scaleLinear` for the population axis and `scaleBand` for the categorical country axis. All elements are rendered as SVG, with the data loaded asynchronously via `d3.csv`.