This example presents a line chart tracking the cumulative total of COVID-19 deaths over time, based on the Johns Hopkins Coronavirus dataset. The visualization uses D3 v5 within a React framework to render an SVG path, with a time-scaled x-axis and linear y-axis. Axis components are built using `d3.axisBottom` and `d3.axisLeft`, while gridlines and markers are drawn as separate React components. The data is loaded via `d3.csv` and transformed to daily death totals.