No, there is not red in all of the flags of the world. It is one of the more popular colors, You will find at least on of these colors on all of the flags: red, green, blue, yellow, black and white.
Red,White,Black,Blue and Yellow
The red dragon of whales is the oldest flag in the world.
Red
When they were chosen, every country in the world had at least one of those colours in their flag.
All the colours: red,black,blue,green and yellow all on a white background. Every flag in the world has One of those colours in.
red and blue
The national and Army flag is the red ball (the sun); the Naval flag is the "Rising Sun", a red ball with red rays extending from the red ball. Both flags are still used today.
you have to get the red flag on level 3 and then you will a secret level and if you get the red flag on the sercret level ole you will have the cannon but it will not take to world 7 it will take you world 5 the way to get the real world 7 cannon is in wolrd 4
A pole and some fabric :d
United Nations
They represent world unity. Every nation flag has at least one of the olympic ring colours in it.
To represent all of the countries. Each countries flag has at least one the colors.