This pie chart visualizes monthly expenditures, with each slice labeled by a spending category and its numeric value. The chart is rendered as an SVG using D3 v5, with the `d3.pie()` and `d3.arc()` functions generating the segments and their centroids. Data is loaded asynchronously from a CSV file via `d3.csv()`, and a legend lists each category with its corresponding dollar amount. Slice colors are assigned using `d3.scaleOrdinal` with a predefined array of color names.