A line chart displays cumulative COVID-19 deaths over time using React components and D3 scales. The chart renders an SVG with a time-scaled X axis and linear Y axis, both with gridlines via `axisBottom` and `axisLeft`. A D3 `line` generator plots the data path, while styled tick lines and hidden domains create a clean aesthetic. Global death totals come from a CSV fetched with `d3.csv`, parsed with `timeParse` and aggregated by column.