As the Order of Christ, led by Prince Henry, the Navigator, was a leading developer of the Portuguese Discoveries, the Cross of Christ was used on the sails of the Portuguese caravels, carracks and other ships involved in the exploration of the seas. Because of this, the emblem was forever associated with the Portuguese discoveries, making it one of the main symbols of the discoveries and of the Portuguese Empire.
After, Manuel, duke of Beja and governor of the Order of Christ, having become King of Portugal, the Cross of Christ came to be regarded and used as a national emblem of Portugal. It has since become a generic Portuguese and, later, Brazilian emblem. After Pedro declared the independence of Brazil, and became Emperor of Brazil, the Cross of Christ was also present in the coat of arms and flag of the former Empire of Brazil.