This example visualizes state-wise population growth using a 3D cube plot, where each cube's height corresponds to population values. The visualization is built with React and D3 v4, rendering SVG elements with animated transitions. It uses `d3.scaleBand` and `d3.scaleLinear` for axes, and the 3D rendering utilizes the `d3-3d` library's cube shapes with interactive drag rotation. Data is loaded from a CSV file via `d3.csv`.