This bar chart displays the top 10 most populous countries based on 2018 United Nations population estimates, with populations converted to raw counts from thousands. The visualization uses D3 v5’s `scaleLinear`, `scaleBand`, `axisLeft`, and `axisBottom` to render an SVG, including customized tick formatting that abbreviates large numbers with the `format` function. Grid lines and labels are styled via margins and axis customization, while the data is loaded from a local CSV file using `d3.csv`.