This example demonstrates a data visualization of country populations using a simple HTML5 SVG canvas. The code loads population data from a CSV file and uses D3's `csv` function to parse it. The visualization applies D3's `scaleLinear` to map population values, drawing a single purple rectangle as the primary graphic element. The implementation utilizes the D3 v6 library within a React framework, rendering the output as scalable vector graphics with a minimalist design approach—the page centers only one colored rectangle without additional axes, labels, or complex chart structures.