This example displays a map of Palestine using a filled green geographic boundary, with three cities overlaid as orange population-scaled circles. It loads world country data as TopoJSON from the world-atlas package, filters the Palestine feature by numeric ID 275, and renders it with d3.geoMercator and d3.geoPath. Circle radii derive from population values via a square-root scale, and the D3 v7 SVG with a tooltip and legend shows interactive details.