Ключевые слова: area, atlas, background, black, border, boston, cartography, concept, contour, country, cut, detail, detailed, federal, fill, filled, flat, geography, graphic, high, icon, illustration, isolated, land, map, massachusetts, nation, national, outline, political, region, regional, resolution, shape, silhouette, simple, simplified, solid, state, symbol, territory, travel, united states, us, usa, white, world,