This example shows the basic cost of Netflix subscriptions across different countries, with the primary visualization rendering a standalone message rather than a chart. The interface displays a centered heading and uses React to render a simple "Hello React!" component inside the root div. The implementation relies on React 16.9 and ReactDOM to manage the component lifecycle, while D3 v5 is loaded but not yet applied to any data or visual encoding. The page structure is minimal, with no explicit data loading, geographic mapping, or interactive elements visible in the provided code, leaving the cost comparison unimplemented beyond the title.