This example displays the top 10 most populous countries as a set of horizontal bars, with no axes or labels, using color intensity to encode population size. The visualization loads data from the United Nations World Population Prospects 2019 CSV file, filtering for countries with over 100,000 people. It uses React hooks (`useState`, `useEffect`, `useCallback`) to manage asynchronous data loading, and renders SVG rectangles via React. The chart employs `d3.csv` for parsing, `scaleBand` for vertical positioning, `scaleLinear` for bar widths, and `scaleSequential` with `interpolateOranges` for the color scale.