The "Middle Passage" was the journey of slave trading ships from the west coast of Africa, where the slaves were obtained, across the Atlantic, where they were sold or, in some cases, traded for goods such as molasses, which was used in the making of rum. However, this voyage has come to be remembered for much more than simply the transport and sale of slaves.
The Middle Passage was the longest, hardest, most dangerous, and also most horrific part of the journey of the slave ships. With extremely tightly packed loads of human cargo that stank and carried both infectious disease and death, the ships would travel east to west across the Atlantic on a miserable voyage lasting at least five weeks, and sometimes as long as three months. Although incredibly profitable for both its participants and their investing backers, the terrible Middle Passage has come to represent the ultimate in human misery and suffering. The abominable and inhuman conditions which the Africans were faced with on their voyage clearly display the great evil of the slave trade. -- http://beatl.barnard.columbia.edu/students/his3487/lembrich/seminar5.html
According to Dr. John Henrik Clarke ["A Great and Mighty Walk"] the Pope gave his blessing to Spain and Portegal and the slave trade began. --http://www.houseofnubian.com/IBS/SimpleCat/Product/asp/hierarchy/0C07/product-id/604225.html
England--joined in this legacy of sin against humanity and hence the 'Transatlantic Slave Trade' was borne. http://www.mariner.org/captivepassage/introduction/