This bar chart displays the populations of the top 10 most populous countries, based on 2008 estimates from the UN World Population Prospects 2017. It uses D3 v5 with `d3.scaleLinear`, `d3.scaleBand`, `d3.axisLeft`, and `d3.axisBottom` to render an SVG. Custom margins position an inner group, with axis labels and bars drawn via `g.append('rect')`. Data is loaded from a CSV file and preprocessed by multiplying population values by 1000.