The organization Al Qaeda led by Osama Bin Laden was the perpetrator of 9/11
The middle passage was the transporting of slaves from Africa to America. Many slaves perished on this journey due to the conditions.
The price would go up because there would be more cotton getting produced but since the prices would go up, there would have less demand.
The Salem Witch Trials were trials held when someone was accused of witchcraft. They took place in colonial Massachusetts 1692-1693. Thirty people were found guilty and nineteen executed by hanging out of two hundred people accused.