This example visualizes the net worth of the richest people over time using an area chart. The chart encodes years on the x-axis and net worth on the y-axis, with a smooth, curved area fill that emphasizes the changing magnitude of wealth. The visualization is built with D3 v5, using `select`, `scaleTime`, `scaleLinear`, `axisBottom`, `axisLeft`, `line`, `area`, and `curveBasis` to render the SVG paths and axes. Data is loaded from a CSV file hosted on GitHub, with net worth parsed as numbers and years as dates before rendering.