This bar chart visualizes the populations of the top ten most populous countries, based on 2018 estimates from World Population Prospects 2017, with each bar’s length reflecting the population value. Using D3 v5, the code loads CSV data via `csv`, scales values with `scaleLinear` and `scaleBand`, and renders axes with `axisLeft` and `axisBottom`. The chart is drawn as an SVG, with bars styled in steelblue, and country labels positioned along the vertical axis.