This example displays the top 10 most populous countries as a bar chart with no axes, using React to render SVG rectangles. The bars are sized proportionally to each country’s 2020 population, with blue vertical gridlines drawn from the linear scale’s ticks. Data comes from the United Nations World Population Prospects 2019, loaded via d3.csv and processed with scaleBand and scaleLinear. The visualization relies on React hooks (useState, useEffect) to fetch and store the data, while d3.v5 provides the scales and max function.