Dead wrong.
Spain was originally inhabited by Celtic peoples.
Then the Romans. in fact, the Roman Gladius comes from Spain, it is the birthplace of many roman military technologies and tactics of the time.
then the Islamic Moors came around, who were NORTH AFRICAN ARAB peoples. That doesn't mean every single Spaniard was raped and turned into arabs. They respected the Christian Spaniards and let them practice their religion. They weren't black. Africa does not = black.
then the Reconquista happened, and Spain is what it is now.
So no, spaniards are european white, not "african black" or "arab"
American blacks and the slave trade come from Sub-Saharan and Western africa peoples, who are black.
North africans do not look like Sub-Saharan africans.