turkey topojson map

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <script src="https://d3js.org/topojson.v2.min.js"></script>

var width = 1000;
var height = 700;

var svg = d3.select('body')
  .append('svg')
  .attr('width', width)
  .attr('height', height);

d3.json('turkey_simple.topojson', function(error,json) {

console.log(json);

var projection = d3.geoMercator().center([35,34.5]).scale(2500).translate([width/2, height+30]);

var path = d3.geoPath().projection(projection)

var towns = topojson.feature(json, json.objects.admin_level_6);
  console.log(towns);

svg.selectAll("path").data(towns.features)
                        .enter()
                        .append("path")
                        .attr("fill","#ccc")
                        .attr("stroke","black")
                        .attr("d", path)
})

</script>
</body>

https://d3js.org/d3.v4.min.js

https://d3js.org/topojson.v2.min.js