This bar chart displays the populations of the top 10 most populous countries using 2020 estimates from the United Nations World Population Prospects. The visualization uses D3 v6 with SVG rendering, employing scaleLinear and scaleBand for axes. The chart customizes axes through the axisBottom and axisLeft APIs, formatting population values with d3.format and replacing 'G' with 'B' for billions. Gridlines are created via tickSize, and both axis domains and tick lines are selectively removed for a cleaner presentation.