This bar chart visualizes the top ten countries by 2020 population, using horizontal bars whose lengths correspond to population values from a CSV dataset. The visualization is built with React and D3 v6, employing `scaleBand` for the categorical y-axis and `scaleLinear` for the quantitative x-axis. Data is loaded asynchronously via `d3.csv` and rendered as SVG rectangles, with the chart updating dynamically after the data arrives.