This bar chart displays supermarket sales data, showing the unit price for different product lines. Built with React and D3 v5, it renders as an SVG with vertical grid lines and horizontal bars. The visualization uses D3’s `scaleBand` for the categorical y-axis, `scaleLinear` for the numeric x-axis, and loads data from a CSV file via `d3.csv`. React’s state management handles the asynchronous data loading and updates the chart accordingly.