This chart uses a horizontal bar layout to display the top 10 countries from the 2019 UN Population dataset. React manages the asynchronous data loading from a CSV file, while D3 scales—specifically `scaleBand` for the categorical country axis and `scaleLinear` for the population values—determine the bar positions and widths. The SVG rectangles are rendered directly by React, with each bar’s length proportional to the 2020 population estimate. D3’s `csv` utility parses the remote data file.