This example displays the monthly unemployment rate in Massachusetts from 1976 to 2003, with data sourced from the Federal Reserve Economic Data (FRED) series MAUR. The visualization loads a CSV file via `fetch` and parses it with `d3.csvParse`, then renders the raw data as text in a `<pre>` element using D3’s `select` and data join. The code relies on D3 v7 and a simple state management pattern to handle the asynchronous loading process.