A line chart displays the cumulative global death toll from COVID-19 over time. The y-axis uses a linear scale starting at zero, while the x-axis maps dates. The visualization uses D3.js (v7) and React (v18) to render the SVG path, with axes generated by `axisBottom` and `axisLeft`. Data is loaded from a CSV file of global deaths and aggregated by date. Grid lines are styled with a light gray color.