This example displays grouped bar charts comparing two countries, Nigeria and South Africa, across two education metrics: average expected and average total years of schooling. The visualization is rendered as an SVG using the React framework and the D3.js library, leveraging scales such as `scaleBand` and `scaleLinear` for positioning. It also employs `scaleOrdinal` for color encoding and includes axes, labels, and a legend to clarify the data categories and country assignments.