section_heading: History
paragraph_text: On January 31, 1891., a republican revolution broke out in the northern city of Oporto and "A Portuguesa" was adopted by the rebels as their anthem. The revolution was crushed and the song banned. In 1910., on October 5, a new revolution succeeded in overthrowing the monarchy and establishing a republic in Portugal. In the following year, 1911., a law proclaimed "A Portuguesa" as Portugal's national anthem. -->