This line chart visualizes the global cumulative COVID-19 death total over time, using a simple black line against a white background. A horizontal marker line highlights the point at which deaths reach one million. The visualization is built with React and D3 v7, using `scaleTime`, `scaleLinear`, and `line` to render an SVG path from a CSV dataset provided by the Johns Hopkins CSSE GitHub repository. The chart updates responsively to fill the full browser window.