<span>To fill the labor shortage, Las Casas urged colonists to import workers from</span>
Answer:
Ehud Barak and Yasir Arafat.
The King Ferdinand of Spain
I believe the answer is a. & then d.
It's not A, as they simply aren't forced to.
It's not C, as Africa is not 'just' a colony; infact, empires and therefore colonies are no longer allowed among the UN.
D is incredibly stupid.
So, B.