This interactive SVG map displays global brain and central nervous system cancer deaths for 2019, using a YlOrRd sequential color scale to encode mortality counts per country. Built with React, it loads country boundaries via `d3.json`, converts them with TopoJSON’s `feature`, and projects them using `geoNaturalEarth1` and `d3.geoPath`. A hover-triggered tooltip appends country names and death totals, while a legend provides color reference. Data comes from a WHO-style cancer mortality CSV joined to ISO country codes.