This example shows a streamgraph of baby name frequencies over time, recreated from a d3-graph-gallery template using React instead of pure D3. The chart uses stacked areas with a silhouette offset and inside-out ordering, where hovering a stream highlights it in the tooltip. The code uses `d3.stack`, `area`, `curveBasis`, `scaleLinear`, and `scaleOrdinal` with the `schemeDark2` palette, while React manages the interactive state. Data comes from a CSV loaded via `d3.csv`.