Which nation was Cuba once a colony of?

We wonder how many comments about the slavery will be posted here, since it is not the U.S.A. We have noticed that the only time slavery is ever mentioned is when it is in regards to the U.S.A. Simply an observation.

Over roughly 400 years, approximately 1 million people were taken from Africa. Only 2% of these people ever came to N. America. The other 98% were sold throughout the Caribbean, the Middle East, and other regions. Info from National Geographic.

I wonder what "Cuba" was like before the rapist came.