This stylized bar chart displays the top 10 most populous countries using the United Nations World Population Prospects 2019 dataset. The visualization uses a horizontal bar layout with a clean, minimalist design, featuring a teal color scheme and Poppins font. The chart includes axes with formatted tick labels (converting values to billions) and a "Population" axis label. Built with React and D3 v5, the code uses `scaleBand` for the categorical y-axis and `scaleLinear` for the quantitative x-axis. The SVG rendering is composed of custom components (AxisBottom, AxisLeft, and Marks) that map data to rectangular bars, with interactive tooltips showing population values via the `format` API.