Rubuta ci gaba don wannan sakin layi - Daga ƙarshen Zamanin Tsakiya, a ƙarni na 15 da 16, Portugal ta hau matsayin ikon duniya a lokacin "Zamanin Bincike" na Turai yayin da ta gina babban daular, gami da mallaka a Kudancin Amurka, Afirka, Asiya, da Oceania. A cikin ƙarni biyu masu zuwa, Fotigal ta ci gaba da yawancin yankunanta, amma sannu a hankali ta rasa yawancin dukiyarta da matsayinta yayin da Yaren mutanen Holland, Ingilishi, da Faransanci suka ɗauki rabon da ke ƙaruwa na kayan ƙanshi da cinikin bayi ta hanyar kewaye ko cin nasara da wuraren kasuwancin Fotigal da yankuna. Alamun raguwar sojoji sun fara da yaƙe-yaƙe biyu masu banƙyama: Yaƙin Alcácer Quibir
a Maroko a 1578 da kuma yunƙurin Spain na cin nasara Ingila a 1588 ta hanyar Armada na Mutanen Espanya <unk> Fotigal a lokacin tana cikin ƙungiyar daular da ba ta da kyau tare da Spain kuma ta ba da gudummawar jiragen ruwa ga rundunar mamaye Mutanen Espanya. Kasar ta kara raunana ne ta hanyar lalata yawancin babban birninta a girgizar kasa a 1755, mamayewa a lokacin Yaƙe-yaƙe na Napoleon da asarar babban mulkin mallaka, Brazil, a 1822. Daga tsakiyar karni na 19 zuwa karshen shekarun 1950, kusan biyu