This bar chart shows the populations of the top three countries in 2022, using a horizontal layout with country names on the y-axis and population values on the x-axis. The visualization is built with React and D3, using `scaleBand` for the categorical axis and `scaleLinear` for the numeric scale. Data is loaded from a CSV file via `d3.csv`, and the SVG renders axis ticks, gridlines, and rectangles for each bar, with the interactivity handled through React state and the `useEffect` hook.