This stylized bar chart displays the ten most populous countries using data from the United Nations World Population Prospects 2019. The visualization uses React components with D3’s `scaleBand` for the categorical y-axis and `scaleLinear` for the numeric x-axis, rendering SVG rectangles as bars. Axis ticks are generated manually with `xScale.ticks()` and formatted using `d3.format`. The chart includes a population axis label and uses a hover tooltip via the SVG `<title>` element to show exact values.