A margin convention bar chart displays the top ten countries by 2020 population, with horizontal bars ordered by country name. The visualization uses React to manage state and render SVG elements, while D3 v5 utilities handle data loading and scales: `csv` fetches the UN population dataset, and `scaleBand` and `scaleLinear` map country names and population values to pixel positions. Axis ticks are generated via `xScale.ticks()`, with the chart area offset by explicit margins for the left-aligned labels.