This example demonstrates basic sales details across various countries using a bar chart built with React and D3 v5. The visualization uses React to manage the DOM structure and D3’s `scaleBand` and `scaleLinear` to map country names and sales values to screen positions and bar heights. Data is rendered as rectangular marks, with color channels differentiating countries. The implementation leverages D3’s selection and data-join methods within a React component to produce the chart dynamically.