Dee ihe ga-aga n'ihu na paragraf a - N'oge nsogbu nke 1383-1385
, Onye isi nke Avis, John I nke Portugal n'ọdịnihu (1385-1433) nyere Reguengo de Tavira Fernão Álvares Pereira, nwanne nwoke nke Constable Nuno Álvares Pereira. Ka oge na-aga, mgbe mmeri nke Ceuta, malitere usoro nke Portuguese Discoveries, obodo ahụ ga-ahụ ka atụmatụ ya na akụ na ụba ya na-abawanye. Otú ọ dị, nnukwu ụlọ ahụ gosipụtara ihe ize ndụ nke ọdịda, dị ka mkpesa nke ndị ya n'ihu ụlọ ikpe nke 1475.