World Longest Rivers Atlas Infographic with National Flags

Geography infographic titled "World Longest Rivers". FLAGS-OF-THE-WORLD grid adapted for the world's longest rivers: a vintage 1900s atlas-style educational infographic with a monochrome palette, featuring a dominant world map and an organized grid of national flags for countries associated with the major longest rivers of the world. Include visually grouped sections for major river systems such as Nile, Amazon, Yangtze, Mississippi-Missouri, Yenisei, Yellow, Ob-Irtysh, Paraná, Congo, and Amur, with each river connected to the relevant countries by neutral atlas-style lines. Render accurate flag colors and proportions for all flags despite the otherwise monochrome design. Show river paths clearly on a world map with subtle engraved atlas texture. Use neutral gray dashed lines for disputed borders, with no political framing and no territorial claims. Include English labels for river names, country names, and simple atlas legend elements only. Educational atlas-style illustration, refined engraved cartography, balanced composition, high clarity, no watermarks. All text MUST be written in English (array). Every heading, label, caption, legend and metric name in the image must be in English — not English. Spell each English word correctly using English characters and diacritics. Numbers stay as digits, accurate flag colors, no political bias on disputed borders, no watermarks Accurate flag colors and proportions. Disputed borders rendered neutrally (gray dashed lines, no political framing). No territorial claims.