Ключевые слова: america, americas, area, areas, border, borders, cartography, color, colored, colorful, colors, colour, coloured, colourful, colours, contour, contours, countries, country, emphasize, frontier, frontiers, general, general map, general maps, geography, gradation, gradient, graphic, gray, grey, highlight, highlighted, line, lines, map, map of the united states, maps, mark, marked, outline, outline map, outline maps, outlines, pattern, patterns, plain, plan, plans, political, profile, profiles, red, region, regions, shade, shading, shape, shapes, silhouette, silhouettes, simple, state, states, stress, subdivision, subdivisions, symbol, symbolic, symbols, territories, territory, tone shading, u s, u s a, united states, united states of america, usa, vermont, vt,