A choropleth map of Dutch municipalities loads from a TopoJSON file and renders each region as an SVG path. Clicking a municipality highlights it in red and triggers a smooth, animated zoom using `d3.zoom` with a `geoMercator` projection and `geoPath`. Hovering changes the fill to orange. The zoom transition, defined with a duration and easing function, centers on the selected region, while the `zoom` event handler adjusts the group transform and stroke width.