Ku dhammee weedha soo socota: Sanadkii 1580, Boqor Philip II oo reer Spain ah ayaa weerar ku qaaday Portugal kadib markii uu dhaxalka boqortooyada ku dhacay qalalaase sababay geerida Boqor Sebastian oo reer Portugal ah intii uu socday dagaal masiibo ah
Portugal ayaa weerartay Alcácer Quibir ee Morocco 1578. Shirkii Cortes ee Tomar ee 1581, Philip waxaa loo caleemo saaray Philip I ee Portugal, isaga oo mideynaya labada taaj iyo boqortooyooyinka dibedda ee hoos yimaada xukunka Isbaanishka ee Habsburg ee Midowga Iberia. Philip wuxuu ku ballanqaaday in uu sii wadi doono boqortooyooyinka si sharci ah oo kala duwan, isaga oo ka tagaya maamulka Boqortooyada Boortaqiiska muwaadiniinta Boortaqiiska, iyadoo ku xigeenka Portugal ee Lisbon uu ilaalinayo danahiisa. Philip xitaa wuxuu caasimadda u wareejiyay Lisbon muddo laba sano ah (1581-83) sababtoo ah waxay ahayd magaalada ugu muhiimsan Jasiiradda Iberia. Dhammaan gumeysiga Portugal waxay aqbaleen xaaladda cusub marka laga reebo Azores, oo u tartamay António, oo ah tartame reer Portugal ah oo u tartamaya carshiga oo helay taageerada Catherine de Medici ee Faransiiska si ay ugu beddelaan ballanqaadka inay ka tanaasulaan Brazil. Ciidamada Isbaanishku waxay ugu danbeyn qabsadeen jasiiradaha 1583.