A line chart displays the cumulative global death toll from COVID-19 over time, based on data from the CSSE at Johns Hopkins University. The chart marks the most recent date with a vertical “now” line and highlights thresholds at one and two million deaths with horizontal reference lines. Built with React and D3 v5, the visualization uses `scaleTime` and `scaleLinear` for axes, and `d3.line` to generate the SVG path from a dataset transformed from CSV by summing daily death totals across all countries.