Ключевые слова: abstract, america, art, border, business, cartography, central, circle, concept, contour, country, creative, design, digital, element, flat, form, futuristic, geography, geometric, hatched, idea, illustration, isolated, land, line, map, modern, network, pattern, plain, political, shape, sign, silhouette, states, strip, stripe, stylized, technology, texture, travel, undulation, united, usa, vertical, white,