This example demonstrates linked brushing between a world bubble map and a time-series histogram, both rendered as SVG in React. The map plots migrant deaths and missing persons by location with circle radii scaled by d3.scaleSqrt, while the histogram aggregates the same metric monthly using d3.bin and d3.timeMonths. Brushing the histogram with d3.brushX filters the map’s displayed circles in real time. The visualization uses d3.geoNaturalEarth1 and d3.geoPath for the map projection, and loads data from a CSV of the Missing Migrants Global 2019 subset.