A line chart shows global cumulative coronavirus deaths over time, using a logarithmic scale for the y-axis. Data comes from the Johns Hopkins COVID-19 time-series dataset. Built with React and D3 v5, the visualization uses `d3.scaleTime`, `d3.scaleLog`, and `d3.line` to generate an SVG path, with axes rendered via `d3.axisBottom` and `d3.axisLeft`. The code also includes reusable marker-line components for highlighting specific values.