1432 Azores occupied by Portuguese.
1433 A Portuguese ship passes Cape Bojador. João dies and is succeeded by Duarte (Edward), who calls a cortes at Evora and passes the Lei Mental ordaining the reversion to the crown of lands granted to nobles on failure of male descendants of the grantee.
1437 Duarte sends an expedition against Tangier. The Portuguese surrounded and saved only by Prince Ferdinand’s offering himself as hostage.
1438 Duarte dies, Alfonso V the African, a minor, succeeds. Pedro, son of João I, regent.
1441 Slave-trade begun by Portuguese.
1447 Alfonso V comes of age and dismisses Pedro.
1449 Alfonso V defeats and kills Pedro at Alfarrobeira.
1458 Alfonso takes Alcacer-Seguier, Africa.
1460 Prince Henry the navigator dies. Cape Verd Islands discovered and settled.
1462 Pedro de Cintra discovers Sierra Leone.