This bar chart displays population values for a set of countries, with horizontal gridlines and labeled axes. The chart renders as an SVG using D3 v5 within a React-styled HTML page. It loads data from a CSV file, scales the Y-axis using `d3.scaleLinear` and the X-axis with `d3.scaleBand`, and draws bars via `d3.axisBottom` and `d3.axisLeft` for gridlines and tick formatting.