This example visualizes the number of gold medals won by the top ten countries in the Tokyo Olympics, using a horizontal bar chart ordered from highest to lowest medal count. The chart is rendered as SVG within a React application, with D3 v5 handling data loading via `d3.csv`, scaling through `scaleBand` and `scaleLinear`, and gridline creation with `xScale.ticks`. Each rectangular bar uses a distinct fill color from a hardcoded array, with the data sourced from a remote CSV file.