National flag is a symbol of a country. It through a certain style, color and design reflect political characteristics, historical and cultural traditions of a country. Generally not allow to hang other country’s nation flag on a sovereign state.
The color of the national flag in the world are mainly red, white, green, blue, yellow, black, etc. The color all have a certain meaning. The shape of the most of nation flag is a rectangle.
The national flag is a inevitable result of sovereignty consciousness growing of a country. The original nation flag appear in modern Europe. And the world's oldest national flag is a Danish flag, Which known as the "Danish power", the color of background is red, it has white cross pattern on the left flag.
all the national flags in the world imagesBy adnose.com to sort out the pictures and names of all the flags in the world, 198 national flags.pdf