This visualization combines a world map and a timeline to explore migrant deaths, with brushing linking the two views. The map displays circles sized by the total dead and missing per location using a square-root scale, while the histogram aggregates deaths by month. A brush on the histogram filters the map to show only data within the selected date range. The code uses React, D3 v5 APIs including `geoNaturalEarth1`, `geoPath`, `scaleSqrt`, `scaleTime`, `bin`, `brushX`, and TopoJSON for world atlas boundaries.