This example shows a horizontal bar chart of product sales data, displaying the December sales figures for the top 10 products. The visualization uses React with hooks like `useState` and `useEffect` to fetch and manage the data, while D3 v5 functions `csv`, `scaleBand`, and `scaleLinear` handle data loading and scaling. The SVG rendering maps products to the y-axis and sales values to the x-axis, with axis ticks and grid lines drawn manually. Data comes from a CSV file loaded via D3’s `csv` method, and the chart updates dynamically once the data arrives.