This example shows the global cumulative death toll from COVID-19 over time, plotted as a basic line chart with two prominent marker lines. A horizontal line at the 1,000,000 death mark and a vertical line at the most recent date provide reference points against the black trend line. The chart uses React and D3 v6, leveraging `scaleTime` and `scaleLinear` for axes, `line()` for the path generator, and data from the CSSEGISandData COVID-19 GitHub repository. The visualization is rendered as an SVG, filling the entire browser window.