This bar chart shows the population of the top 10 most populous countries using 2018 estimates from the United Nations World Population Prospects. The visualization uses D3 v5 with a linear scale for population values and a band scale for countries, rendering bars as SVG rectangles. Customized D3 axes display tick marks, labels, and formatted population values (in billions), while a title and axis label clarify the content. The chart builds on a prior bar chart example, adding refined axis styling and formatting.