This example combines a bubble map and a histogram to visualize missing migrants data. The map uses a natural Earth projection with d3.geoNaturalEarth1 and d3.geoPath to plot circles sized by death tolls, while the histogram aggregates reported deaths by month using d3.bin and d3.timeMonths. Users can brush the histogram with d3.brushX to filter the map in real time, with state managed through React hooks. Data comes from a CSV of migrant incidents, rendered as SVG.