It is true because once Constantinople fell to the Ottomans in 1453 who then jacked up the prices of spices to the Western Europe. At the same time, the reconquista (which is part of the crusade) is happening in Iberia and once the last muslim kingdom in Spain fell, the conquistadors then decided that the crusades should expand out of Europe with Spain to the west (the American) and Portugal to the East (India and later the Far East).

The Bull of Demarcation by Pope Alexander VI and later decrees gave the rights to Spain and Portugal to colonize, exploit, and convert all non-Christian territory to Catholicism so yes, the arrival of the Portugese was also part of the crusades since the Holy Land was considered lost forever and inaccessible to the western crusaders.

Every Moslems have their own Islamic influenced version of history of the Christian crusade or anything that's in favour towards Islam, I'll stick what has been established in history.

Thank you but No Thanks.