Tonga
The symbolism of the flag of Tonga carries cultural, political, and regional meanings. Tonga is 97% Christian. The red cross of the flag of Tonga alludes to Christianity. The white of the flag of Tonga symbolises purity. The red of the Tonga flag represents the crucifixion and the sacrifice of the blood of Christ.
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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