This bar chart displays the top 10 most populous countries based on 2018 United Nations estimates, with population values scaled in thousands. Using D3 v5, the visualization employs `scaleLinear` and `scaleBand` to map population counts and country names, while `axisBottom` and `axisLeft` render formatted axes with a custom tick format that converts large numbers to abbreviated units. The SVG rendering includes gridlines, a title, and an axis label, with horizontal bars styled in steel blue.