Answer:
Hi there . is it an anime?
It necessary and proper clause a source of ongoing debate because the clause deals with powers that are misinterpreted and are ambiguous. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.
It was basically a the transportation of African slaves to America. This occurrance took place between the 16th and the 19th century.
In this trade slaves were sold to Western Europeans which then resold the slaves to the Americans. The first ones to engage in this "programme" where the Portuguese, who took slaves to Brazil for the first time about 26 years they arrived there in 1500.
Hope it helped,
BioTeacher101