This pie chart visualizes survival outcomes for Titanic passengers, splitting the dataset into green "Survived" and red "Not Survived" slices with value labels and a legend. It loads CSV data from a GitHub repository using `d3.csv`, aggregates counts via `d3.rollup`, and generates the chart with `d3.pie` and `d3.arc`. Hover interactions trigger a scale transition on slices, while SVG text elements provide axis labels and legend annotations. The visualization renders entirely in SVG with D3 v7.