Ключевые слова: abstract, america, atlas, background, bitmap, black, blue, borders, boundaries, boundary, chart, contour, country, cut, cutout, detail, detailed, diagram, digital, fill, filled, geography, gradient, graphic, graphics, illustration, island, isolated, map, mask, mercator, nation, outline, raster, rhode, shaded, shading, shape, silhouette, state, states, surface, texture, transition, united, usa, white,