By the 1800s, fewer captive africans were dying during the middle passage. what was the reason for this improvement in mortality rates?

Captive African slaves would have easily become disoriented and mentally unstable during the middle passage due to the harsh conditions that they faced during this trip. Slaves were packed very closely together in the hulls of ships and were forced to spend long amounts of time there without movement and access to sunlight. These conditions would easily make a person disoriented and mentally unstable. 

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