This example shows a world map with bubble markers indicating the total number of dead and missing migrants, alongside a time-series histogram of the same data. Brushing a date range in the histogram filters the bubbles shown on the map. The visualization uses React state to manage the brush selection, D3’s `geoNaturalEarth1` projection and `geoPath` for the map, `scaleSqrt` for bubble sizing, and `brushX` for interactive filtering. Data comes from a CSV of migrant incidents loaded via `d3.csv`.