This example shows a horizontal bar chart of the top 10 countries by population in 2019, with country names on the y-axis and population values on the x-axis. The React component uses React hooks to load CSV data via `d3.csv`, then renders SVG marks as `<rect>` elements for bars and `<text>` for axis labels. It leverages `d3.scaleBand` and `d3.scaleLinear` to map data to coordinates, with gridlines and ticks generated manually from the scales. The chart is built entirely with React components and D3 utilities, without a separate visualization library.