Portal:European Union/Selected article/26
The João Chagas and Abel Botelho.
The current flag represents a sweeping change in the evolution of the Portuguese flag, which was always intimately associated with the royal arms. Since the country's foundation, the national flag developed from King Afonso I's blue-cross-on-white armorial square banner to the liberal monarchy's royal arms over a blue-and-white rectangle. In between, major changes associated with important political events contributed to the evolution of the national shield into its current design.