Make a bar chart
This bar chart displays the populations of ten countries, from China to Mexico, using horizontal bars scaled linearly by population value. It is rendered with D3 v5 in an SVG, using `d3.scaleLinear` and `d3.scaleBand` for the x and y scales, and `d3.axisLeft` and `d3.axisBottom` to show axes. Data is loaded from a CSV file and processed to multiply each population by one thousand, with the bars styled in steelblue.