This bar chart displays the 2020 population estimates for ten countries, using horizontal bars ordered by country name. The visualization is built with React and D3 v7, where `d3.scaleBand` positions the categorical y-axis and `d3.scaleLinear` maps population values to bar widths. SVG rectangles are rendered through the custom `Marks` component, with axes generated by `AxisBottom` and `AxisLeft`. The data originates from a CSV file of UN Population 2019 data, loaded asynchronously and processed to extract the 2020 values.