This fork of Activity 7 visualizes 2020 population data for up to thirty countries as a horizontal bar chart, with population values shown on the x-axis and country names on the y-axis. Built with React and D3 v5, it uses `scaleBand` and `scaleLinear` to position bars and axes, rendering everything as SVG elements. The data is loaded via `d3.csv` from a remote GitHub URL, and tooltips display formatted population values using `format('.2s')`. The chart employs a green fill for bars, blue axis lines, and custom tick labels that convert large numbers to billions.