This stylized bar chart displays the top 10 most populous countries using horizontal bars, with population values on the x-axis and country names on the y-axis. The bars are rendered as SVG rectangles using React components, with axes built from `d3.scaleBand` and `d3.scaleLinear`. Population data comes from the United Nations World Population Prospects 2019, loaded via `d3.csv`. The chart includes native tooltips and styled ticks, with labels formatted using `d3.format`.