The national flag of Guinea-Bissau was adopted on the day Guinea-Bissau proclaimed its independence from Portugal in 24 September 1973. It is almost identical to the flag of the African Party for the Independence of Guinea and Cape Verde, the country's dominant party and previously sole ruling party. Yellow and green correspond to Guinea-Bissau's northern savannas and southern forests, respectively, and the two are also meant to represent agriculture. The yellow is also sometimes reported to represent the Sun or mineral wealth, green represents hope, and red represents bloodshed in the revolution. They added the Black Star of Africa, an established symbol of anti-colonial resistance, and put it and a red bar on the left (hoist) side of the flag, to represent the country's position on the West coast of Africa.