Who were mainly used as slaves before the Europeans started selling African slaves

the Portuguese

Explanation:

the Portuguese in the 16th century were the first to engage in the Atlantic slave trade in 1526 they completed the first Transatlantic slave voyage to Brazil and other Europeans soon followed

hi there!

moors is essentially another word for muslims.

the moors invaded spain around year 700, during their time ruling spain the muslims promoted religious tolerance (moors tolerated jews who were viewed as outcasts by northerners), the moors as well had a great impact on their language, and architecture (palaces were created).

i hope this !