At the height of European colonialism in the 19th century, Portugal had already lost its territory in South America and all but a few bases in Asia. Luanda, Benguela, Bissau, Lourenço Marques, Porto Amboim and the Island of Mozambique were among the oldest Portuguese-founded port cities in its African territories. During this phase, Portuguese colonialism focused on expanding its outposts in Africa into nation-sized territories to compete with other European powers there.