Rubuta ci gaba don wannan sakin layi - A cikin 1479 Portugal da Castile sun rattaba hannu kan Yarjejeniyar Alcáçovas wanda ya kawo karshen Yaƙin Gasar Castilian
Ka yi haƙuri. A lokacin yakin Castile ya kalubalanci cinikin bayi na Fotigal ta hanyar barazanar tashoshin Fotigal da kuma kai hare-haren da ba su yi nasara ba a cikin Gulf of Guinea. Da yake an kawar da babban abokin hamayyarsu na Turai, ƙasar Portugal ta faɗaɗa hanyoyin kasuwanci da kuma zama a Afirka ta Yamma ba tare da hamayya ba a cikin ƙarni na 15. A cikin wannan karni, 'yan mulkin mallaka na Fotigal, masu kasada, da' yan kasuwa sun yi tafiya zuwa yankunan bakin teku da tsibiran Afirka ta Yamma - musamman Cabo Verde - ko da son rai ko ta hanyar karfi. Wasu 'yan kasuwa ne ko wakilai na kamfanonin kasuwanci waɗanda suka "jefa kansu" da yardar rai ("lançavam") don yin hulɗa da mutanen Afirka don dalilai na kasuwanci, kuma galibi suna kauce wa harajin mallaka na mulkin mallaka na Fotigal. Koyaya, yawancin "lançados" sun kasance bisa doka ko kuma sun yi gudun hijira zuwa Afirka, gami da yahudawa da Sabbin Kiristocin da suka tsere daga Inquisition na Fotigal, da kuma mutanen da ake kira "degredados" waɗanda ke ba da gudun hijira ta doka. Ƙalilan daga cikin "lançados" ba 'yan Portugal ba ne, amma 'yan Spain ne, Helenawa, ko kuma 'yan Indiya.