This interactive map visualization displays global country boundaries with multiple geographic projections, including mercator, orthographic, and Albers USA. Users can click any country to switch between orthographic and mercator views, while dragging rotates the globe and zooming scales the display. The visualization uses D3.js with d3.geoPath for rendering, d3.geoOrthographic and d3.geoMercator for projections, and topojson to parse world-atlas country data. SVG paths render countries with hover highlighting, graticule lines, and animated transitions (750ms) when switching projections.