This example shows a horizontal bar chart of the top 30 countries by 2020 population, with each bar labeled by country name and values formatted in billions. The visualization uses React with D3 v5 scales (scaleBand for the y-axis and scaleLinear for the x-axis), rendering SVG rectangles via the Marks component. Data is loaded as CSV from a GitHub repository and processed with d3.csv, with population values multiplied by 1000. The chart includes axis components for bottom and left ticks, plus an "POPULATION-2020" axis label.