This stylized bar chart displays the populations of ten countries using horizontal bars, with the x-axis formatted in billions and the y-axis listing country names. Built with React and D3 v5, it renders as an SVG using `scaleBand` for the categorical y-axis and `scaleLinear` for the quantitative x-axis, while custom axis components generate tick marks and labels. The bars are simple rectangles with tooltips showing the population value, and the layout is styled with a custom Poppins font and muted color palette.