This stacked bar chart shows the sales performance of six products—Laptop, Smartphone, Tablet, Headphones, Smartwatch, and Camera—across five regions (North, South, East, West, Central). The x-axis represents dollar amounts as a percentage, and the y-axis lists product categories. Built with D3 v7, it uses `d3.stack()` to generate stacked series, `d3.scaleBand` for the y-axis, and `d3.axisBottom` for the x-axis. Mouseover interactions display tooltips showing each region’s percentage contribution. Data comes from an inline CSV file loaded via `d3.csv`.