This bar chart displays the population of the top 10 most populous countries, using 2018 estimates from the United Nations World Population Prospects. The chart shows a horizontal bar for each country, with a linear x-axis for population and a banded y-axis for countries, both customized by removing grid lines and domain paths. The visualization is built with D3 v5, using `scaleLinear`, `scaleBand`, `axisLeft`, and `axisBottom`, and it renders as SVG. Data is loaded from a CSV file and formatted with the `format` function, replacing 'G' with 'B' for billion-scale tick labels.