Final answer:
The 'galley positions' and 'aisles positions' refer to the packing arrangements for slaves on a slave ship, as detailed in a historical document describing the inhumane conditions that allowed for an increased number of slaves to be transported.
Step-by-step explanation:
The question pertains to the historical terminology and conditions related to the Transatlantic Slave Trade. The galley positions and aisles positions referenced to are terms associated with the arrangement of enslaved individuals on a slave ship. A historical document titled "PLAN SHEWING THE STOWAGE OF 130 ADDITIONAL SLAVES ROUND THE WINGS OR SIDES OF THE LOWER DECK BY MEANS OF PLATFORMS OR SHELVES (IN THE MANNER OF GALLERIES IN A CHURCH) THE SLAVES STOWED ON THE SHELVES AND BELOW THEM HAVE ONLY A HEIGHT OF 2 FEET 7 INCHES BETWEEN THE BEAMS: AND FAR LESS UNDER THE BEAMS" gives us a harrowing look into the inhumane conditions aboard such ships. It describes how additional enslaved Africans were packed into tight spaces with as little as 2 feet and 7 inches of height clearance, which is far lower than humane standards for transporting individuals.