US Map example by bradoyler

index.html

<!DOCTYPE html>
<meta charset="utf-8">
<style>
.mesh {
   fill: #fff;
   stroke: #333;
   stroke-width: 1px;
   stroke-linejoin: round;
}
</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<script>
var width = 960, height = 500;
var path = d3.geo.path();

var svg = d3.select("body").append("svg")
    .attr("width", width).attr("height", height);
    
d3.json("/mbostock/raw/4090846/us.json", function(error, us) {
  if (error) throw error;
  
  svg.append("path")
      .datum(topojson.feature(us, us.objects.land))
      .attr("class", "mesh")
      .attr("d", path);
      
  svg.append("path")
      .datum(topojson.mesh(topology, topology.objects.states, function(a, b) { return a !== b; }))
      .attr("class", "mesh")
      .attr("d", path);
});
</script>