Basic canvas rendering of Infant Mortality Choropleth. See that example for legend and tooltips and to learn more about the data.
Modified http://d3js.org/d3.v4.js to a secure url
Modified http://d3js.org/topojson.v1.min.js to a secure url
https://d3js.org/d3.v4.js
https://d3js.org/topojson.v1.min.js