This stylized bar chart displays the top 10 most populous countries from the United Nations World Population Prospects 2019 dataset. The visualization uses a horizontal bar layout with a playful handwritten font and muted color palette, showing population values in billions along the x-axis. The React-based code employs d3.scaleBand and d3.scaleLinear for positioning, with SVG rendering for the marks and axes. D3’s format function converts large numbers to abbreviated labels, while tooltips provide exact population figures on hover.