Sudan
The red stripe is symbolic of the struggle for independence and the sacrifices of the nation's martyrs. White represents light, peace and optimism. The black is symbolic of the nation itself, since Sudan in Arabic means black. The green is a symbol of Islam, prosperity and agriculture.
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Philippines
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Poland
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Poland - Eagle
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Portugal
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Puerto Rico
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Qatar
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Romania
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Russia
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Rwanda
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San Marino
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Sao Tome & Principe
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Saudi Arabia
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Scotland
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Scottish Rampant Lion
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Senegal
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Serbia
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Seychelles
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Sicily
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Sierra Leone
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Singapore
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Slovakia Republic
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Slovenia
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Solomon Islands
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Somalia
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South Africa
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South Korea
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South Sudan
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South Vietnam
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Spain
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Sri Lanka
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St. Andrews Cross
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St. Kitts-Nevis
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St. Lucia
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St. Maarteen
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St. Vincent & Grenadines
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Sudan
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Suriname
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Swaziland
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Sweden
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Switzerland
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Syria
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Tahiti
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Taiwan
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Tajikistan
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Tanzania
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Thailand
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Tibet
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Togo
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Tonga
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Trinidad & Tobago
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Tunisia
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Turkey
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Turkmenistan
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Turks-Caicos
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Tuvalu