This interactive line chart visualizes cumulative COVID-19 death rates over time for multiple countries, using data from the Johns Hopkins Coronavirus Dataset. A dropdown menu lets users select a country to highlight its trajectory in red. The visualization uses React for component structure and D3 v5 for scales, axis generation, and line rendering. A Voronoi overlay enables hover detection to display tooltips with the exact death count and date for nearby data points. The y-axis uses a logarithmic scale to accommodate the wide range of cumulative death values across countries.