A line chart displays cumulative COVID-19 deaths over time for each country, using a logarithmic y-axis to accommodate wide variations in death tolls. The visualization renders multiple country-specific paths via React and D3 v5, with scales created by `scaleTime` and `scaleLog`, and lines generated by `d3.line`. A Voronoi overlay, built with `d3.Delaunay`, provides hover interactions, while custom `XAxis` and `YAxis` components apply `axisBottom` and `axisLeft`. Data originates from the CSSEGISandData COVID-19 global time series CSV, parsed with `d3.csv` and `timeParse`.