This example shows the population of the ten most populous countries in 2020, using data from the United Nations World Population Prospects. A React component renders an SVG bar chart where each country’s bar length is proportional to its population. The code uses `d3.csv` to load the data, `d3.scaleLinear` and `d3.scaleBand` to position bars, and separate React components for the axes and marks. The bottom axis uses `xScale.ticks()`, while the left axis displays country names, with bars styled in steel blue.