This pie chart displays the GDP of ten countries, with each slice labeled directly on the chart. The labels, however, overlap when slices are narrow or adjacent. The visualization uses D3 v4 with SVG rendering. It creates the pie layout with `d3.pie()` and draws slices using `d3.arc()`. Text labels are positioned via `arc.centroid()` and styled with Arial font. Countries and their GDP values are hardcoded, and slice colors come from a `d3.scaleOrdinal()` with a predefined color range.