This bar chart visualizes population data for various countries, with each bar’s height representing a country’s population in billions. The graphic renders as an SVG using React, with D3 v5’s `d3.scaleBand` and `d3.scaleLinear` for positioning, and `d3.axisBottom` and `d3.axisLeft` for labeled grid lines. Data is loaded from a CSV file and transformed by multiplying values by 1000. The chart includes a flipped y-axis transform to draw bars upward, with steelblue styling and a light background.