Displaying a map using D3 and SVG

In this section, you will learn how to load a JSON file that contains geographical data and use it to draw SVG polygons. We will use the Data/world-lowres.geojson file (from the repository for this chapter). This is a fragment of this file:

{"type":"FeatureCollection","features":[
  {
    "type":"Feature",
     "id":"AFG",
     "properties":{"name":"Afghanistan"},
     "geometry":{
        "type":"Polygon",
        "coordinates":[[[61.210,35.650],[62.230,35.270], … ,[61.210,35.650]]] }
  },{
   "type":"Feature",
   "id":"AGO",
   "properties":{"name":"Angola"},
   "geometry":{
     "type":"MultiPolygon",
     &quot...