“But Morocco didn’t exist!” - addressed in another reply, see sibling. The UN argument boils down to Spain lobbying the UN early on (post-WW2) at a time when M

“But Morocco didn’t exist!” - addressed in another reply, see sibling. The UN argument boils down to Spain lobbying the UN early on (post-WW2) at a time when Morocco and other North African and West Asian states either did not exist yet or did not have the ability to represent themselves well at the UN.