This stacked bar chart displays the distribution of three subgroups across multiple categorical groups, with each bar segment colored distinctly to show proportional composition. The visualization uses D3 v7 to load CSV data via `d3.csv` from a GitHub-hosted dataset, then applies `d3.stack()` and `d3.scaleBand()` to structure and position the bars. Colored segments are rendered as SVG rectangles using `d3.scaleOrdinal` for color mapping, with axes generated through `d3.axisBottom` and `d3.axisLeft`.