This example displays an interactive map of Dutch municipalities, coloring each region in light blue with black outlines and highlighting areas in solid blue on hover. The visualization loads geographic data from a TopoJSON file and renders it as SVG paths using D3 v5 with a Mercator projection. It employs d3.json to fetch the data, d3.geoPath with geoMercator for drawing shapes, and includes d3-zoom.v2 for potential panning and scaling capabilities. The hover effect is implemented through CSS, and each municipality includes a tooltip showing its name and ID.