This bar chart visualizes the population of the top ten most populous countries, using horizontal bars to compare values. The chart reads population data from a CSV file and renders it as SVG. It employs D3 scales (`scaleLinear` for the x-axis, `scaleBand` for the y-axis) to map the data, with axes generated via `axisBottom` and `axisLeft`. Bar widths are set proportionally to population via the linear scale, with a tick label formatter that abbreviates numbers (e.g., converting billions to "B").