This bar chart displays the total population of the top 10 most populous countries in 2018, with countries on the y-axis and population on the x-axis. Using D3 v5, it loads data from a CSV via `d3.csv` and renders SVG rectangles. The chart employs `d3.scaleLinear` for the x-axis, `d3.scaleBand` for the y-axis, and `d3.axisLeft` and `d3.axisBottom` for tick labels. Population values are multiplied by 1,000 before scaling.