This example displays the top 10 most populated US states as a horizontal bar chart rendered in SVG. It uses React 16.9 and D3 v5, combining state management via React hooks with D3’s `scaleBand`, `scaleLinear`, and `max` for data mapping. The chart reads a CSV dataset through `d3.csv`, then renders rectangles and axis tick text using JSX. The visualization highlights bar lengths proportional to population, with a blue gridline and custom styling from the embedded CSS.