This example combines a choropleth map and scatterplot to compare country-level attributes, with the map color encoding urbanization rate (green to grey) while the scatterplot plots cat breed minimum weights against maximum life expectancies. The visualization uses two separate SVGs within a single container, employing `d3.geoEqualEarth` and `d3.geoPath` for the map projection, `d3.scaleLinear`, `d3.scaleOrdinal`, and `d3.schemeCategory10` for color encoding, and includes mouseover tooltips. Data comes from a CSV of cat breeds joined to country geometries, with the map colored by matching country names and the scatterplot sized by a fixed radius.