This interactive bar chart displays the 2020 population estimates for the top 30 countries, ranked by country name along the y-axis and population size on the x-axis using a linear scale. Built with React and rendered as an SVG, the visualization uses D3 v5 APIs such as `scaleBand` for the categorical y-axis and `scaleLinear` for the continuous x-axis. The code fetches CSV data from an external GitHub URL, formats population values with the `format` function (converting billions to “B”), and provides hover tooltips via SVG `<title>` elements. The styling includes green bars, blue tick lines, and the Poppins font.