This bar chart displays the population of the top 10 most populous countries using 2018 estimates from the United Nations World Population Prospects. It uses `d3.csv` to load data, `scaleLinear` and `scaleBand` for positioning, and `axisBottom` and `axisLeft` for ticks. The code customizes the axes by formatting population values with `d3.format` and removing domain lines. A video link in the README supplements the visualization, which renders bars in SVG with a steelblue fill.