Answer:
they followed him everywhere he went
During the Crusades, VeneTan ships carried Crusaders east and brought back riches from these countries.
This led to the development of many trading centers that operate in trading various type of commodities internationally, which led to economic Growth all across Europe.<span />
It really depends on the perspective you put it into. If you were a African that was taken from your home land, and forced to board a ship with hundreds of other Africans were you could barely stand, wouldn't you say the trade of slaves? But this also brought economic wealth to the Americas and it also help support the trade of sugar. This can be debatable though.
