This stylized bar chart displays the ten most populous countries using data from the United Nations World Population Prospects 2019. The visualization ranks each nation horizontally by population, with a teal fill color and custom Poppins typography. Built with React and D3 v5, it uses `scaleBand` for the categorical y-axis and `scaleLinear` for the numeric x-axis, rendering SVG rectangles through a custom `Marks` component. The chart includes formatted axis ticks that abbreviate large numbers (e.g., "1.4B") and provides tooltips on hover via SVG `<title>` elements.