This example displays a bar chart of student scores from a CSV file, using React to manage state and D3 to render SVG marks. The horizontal bars encode each student's amount through length, with categorical names on the y-axis and a linear scale for values on the x-axis. The code uses `d3.csv`, `scaleBand`, and `scaleLinear`, along with `axisLeft` and `axisBottom` for ticks. React’s `useState` and `useEffect` load and transform the data, while `ReactDOM.render` mounts the visualization.