This bar chart displays the top 10 most populous countries using data from the United Nations World Population Prospects 2019. The visualization uses React with d3.scaleBand for the y-axis and d3.scaleLinear for the x-axis, rendering SVG rectangles via the Marks component. Axes are generated with custom AxisBottom and AxisLeft components, while tooltips are provided through SVG title elements. Population values are formatted using d3.format to abbreviate large numbers, and the chart applies a Poppins font with a teal color scheme.