the island of arguim was used by the portuguese as a
Arguin The island changed hands frequently during the colonial era. The first European to visit the island was the Portuguese explorer Nuno Tristão, in 1443.[3] In 1445, Prince Henry the Navigator set up a trading post on the island, which acquired gum arabic and slaves for Portugal. By 1455, 800 slaves were shipped from Arguin to Portugal every year.[4]