This interactive visualization displays migrant deaths and missing persons on a world map, with a time-series histogram below. The map uses D3's `geoNaturalEarth1` projection and `geoPath` to render landmasses, graticules, and country boundaries, while circles sized by `scaleSqrt` represent death counts from a CSV dataset. A brushable histogram, built with `brushX` and `scaleTime`, filters the map's data points by date range. React's `useMemo` optimizes the rendering of static geographic layers for performance.