This example displays a horizontal bar chart comparing 2020 population figures for 30 countries. The visualization uses React to render SVG elements, with d3.scaleBand for the categorical y-axis and d3.scaleLinear for the numerical x-axis. Data is loaded asynchronously from a CSV file via d3.csv, and population values are formatted using d3.format with a custom tick formatter that converts gigabytes to billions. The chart includes axes generated through custom React components and interactive tooltips using SVG title elements.