This chart shows the global cumulative death toll from COVID-19 over time, using data from the Johns Hopkins Coronavirus Dataset. A thick black line traces the rising total from the first recorded deaths through the most recent date, with a horizontal marker at 10,000 deaths and a vertical marker at the final date. The visualization is built with React and D3 v5, using `scaleTime` and `scaleLinear` for axes, a D3 `line` generator for the path, and custom `XAxis`, `XMarkerLine`, and `YMarkerLine` components rendered as SVG.