Flag of Cape Verde interpretations of the Pantone standards. Before independence from Portugal, Cape Verde did not have an official flag, and the Portuguese national flag was used. In the late 1960s, a flag for the Portuguese overseas province of Cape Verde was proposed, consisting of the flag of Portugal with the shield from the provincial arms added to the lower fly. However, this flag was never adopted. The original national flag of Cape Verde was introduced on independence in 1975, and was based on the flag of the Partido Africano para a Independência da Guiné e Cabo Verde (PAIGC). It used the common
Boa Vista, Cape Verde salt deposits, which were mainly exploited by the English. In 1820, after many pirate attacks, the population moved to Porto Inglês, later renamed Sal Rei, which had been founded at the end of the 18th century. As did much of the Cape Verdean economy, the exploitation of salt on Boa Vista also relied largely on slavery. A Portuguese-British commission to end slavery was established in Boa Vista in 1842, but slavery was not completely abolished until 1876. Until 1935 the municipality of Boa Vista also covered the island of Sal. In 1975, Cape Verde declared its independence. Administratively, the island