The currency in Portugal is the euro, which makes it a very worry-free destination for many other Europeans to visit when it comes to money matters (it is the currency of 13 European countries, used by 315 million people).
What do the colors of the flag mean? What do the colors of the flag mean? According to custom and tradition, white signifies purity and innocence; red, hardiness and valor; and blue signifies vigilance, perseverance, and justice. Ask the Flag Expert a Question. View more flag questions.
Well if you are asking about signal flags, they are different colors in order to easily differentiate one flag from the other. The A flag indicates divers, the B indicates fuel or explosives. As for national flags, that is a more complex question, as each nation has its reasons for the colors and even then there is disagreement as to the colors meanings.