On the face of what you're saying I respect, however the Portuguese were also involved in defeating the moors. Expanding into trade was indeed economic, but I can't dismiss the role they played. Following wars are economic booms. I don't want to sound redundant, the question is rhetorical at this point, how was the Arab world skipped over? What made them say, "we'll go West Africa after this war instead of directly benefitting from the Arabs we just beat"? Proximity? What exactly made Portugal and Spain look westward (to establish that papal bull)?
I'm asking a deeper question I've yet to find the answer to. It's one thing to travel for trade, it's another to dismiss the idea of warring against the states that conquered your territory for over seven hundred years.
I have a theory that somehow whatever was happening toward the middle of the 1400s sent Portugal and Spain to North Africa and from there a deal was brokered or something happened that preserved the Islamic world at the expense of West Africa. Last I remember West Africans didn't make it to the Iberian Peninsula, so why were they so aggressively enslaved? Toby Green's book was pretty good for pointing out what you mentioned, there were even contracts for trade in Spain and Portugal so things were lucrative. I'm reading George Brooks' book right now and the pieces are coming together but I'm missing that one piece.
Something isn't making sense that the Arab world wasn't immediately dealt with at least Spain and Portugal extending the Reconquista into North Africa. Negrophobia? Maybe, the only group who really knew of blacks in West Africa were the Arabs through the Trans-Saharan Trade. Arab Muslims were in West Africa, North Africa and the Iberian Peninsula.
- Something is missing, something that spared the Arab world. What was it?
Before we get too far off in how race was invented, we need context as to why the Arab world was spared after they were defeated in war.
Example: the United States defeats Japan in WWII but all of a sudden the United States decides to subject China to the penalties of Pearl Harbor. That's not logical unless a deal were brokered between the US and Japan at the expense of China.