This bar chart displays population estimates for a set of countries, with vertical bars sized proportionally to each value. The visualization loads data from a CSV file, parsing and scaling the population numbers before rendering. Built with React and D3 v5, the chart uses `d3.scaleBand` for the x-axis categories and `d3.scaleLinear` for the y-axis, while `d3.axisBottom` and `d3.axisLeft` generate gridlines. The SVG rendering includes a flipped coordinate system to draw bars upward, with steelblue fills styled via CSS.