Red is one of the first colors to be used by mankind. Indeed, it is possible to find red drawings in Paleolithic caves. This color was used extensively during antiquity and the Middle Ages since it was easy to produce. Jesus Christ was also presented with red clothes. It was then a symbol of royalty and power.
Red is the most used color for flags in Asia, Europe, and America. For example, China, Japan, France, Spain, Switzerland, Canada, the United States, Chile, and Peru decided to use red in their flags. This color is often associated with wars, blood, and sacrifices, as well as courage and bravery. It was also easier to see red flags on battlefields and it was an inexpensive color to produce. Otherwise, this color was also used to represent Great Britain or communism.