Why only partial of Australia shown on the page --GeoJson

Question

I loaded the GeoJson file from this link https://github.com/codeforamerica/click_that_hood/blob/master/public/data/australia.geojson, why just partial of it shown? How to debug it?

here is the code:

var width = 600,
height = 400;

var projection = d3.geoAlbers()
    .scale(200)
    .translate([width, height])

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

var svg = d3.select("#chart").append("svg")
    .attr("width", width)
    .attr("height", height)

    d3.json("data/aus.json").then(data=>{
        svg.selectAll('path')
        .data(data.features)
        .enter()
        .append('path')
        .attr('d', path)
        .attr('stroke', '#fff')
        .attr('stroke-width', 1)
        .attr('fill','orange')
    })