The colors of national flags in the world are mainly red, white, green, blue, yellow and black. These colors have their own meanings:
Red symbolizes the country's spirit of striving for independence and liberation, the blood, courage, sincerity and enthusiasm of pioneers, and the prosperity of the country.
White symbolizes purity and integrity, hoping for a bright future.
Green symbolizes good luck. Most of the flags of Islamic countries like to use green, which is considered as a symbol of good luck and a symbol of believing in Islam. Some countries in the desert yearn for oases, and their national flags are green.
Blue symbolizes the ocean, river and sky.
Yellow symbolizes sunshine, gold, resources and wealth.
The birth of the national flag
The earliest national flag in the world is the Danish flag. /kloc-in the 0 th and 7 th centuries, Denmark and Estonia were losing ground in the war. At this critical moment, a red and white flag fell from the sky. A Danish soldier thought it was a blessing from God, so he raised his hand and shouted: Dannebrog (meaning "Danish flag" or "red flag").
Then the Danish legion immediately turned defeat into victory like chicken blood, and this flag became the Danish flag, which is Danny Bloch. During the Ming and Qing Dynasties, countries all over the world already had national flags.