D3 Examples - World Map with D3 and TopoJSON

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<!DOCTYPE html>
<meta charset="utf-8">
<style>svg{width:100%;height:500px;margin:0px auto;}</style>
<body>
<script src="https://unpkg.com/d3@4"></script>
<script src="https://unpkg.com/topojson-client@3"></script>
<script>
var svg = d3.select("body").append("svg");
var path = d3.geoPath().projection(d3.geoMercator());
d3.json("https://unpkg.com/world-atlas@1/world/110m.json", function(error, world) {
  if (error) throw error;
  svg.selectAll("path")
     .data(topojson.feature(world,world.objects.countries).features)
     .enter().append("path")
     .attr("d", path);
});
</script>
    