An interactive map of Georgia county-level COVID-19 death counts, where a linked time-series histogram below the map filters the displayed circles via brushing. The map uses `d3.geoNaturalEarth1` projection with `d3.geoPath` for world atlas landmasses, while circles are scaled by `d3.scaleSqrt` based on total dead and missing. The histogram uses `d3.bin` and `d3.brushX` to select date ranges, with React updating the filtered data in real-time. Data comes from a CSV of reported dates and coordinates.