This interactive visualization shows global COVID-19 confirmed cases per million people using a geographic map with colored regions and proportional circle markers overlaid on OpenStreetMap tiles. The map uses D3 v7 to process COVID-19 data from the v3 API and world GeoJSON from the World Atlas, applying a sequential color scale with the YlOrRd interpolator to represent case intensity. A leaflet legend displays quantile-based color ranges, while hover interactions reveal detailed country statistics in an information control. The visualization combines Leaflet's slippy map functionality with D3's data manipulation and color scaling capabilities.