Final answer:
The worst leg of the Triangle Trade route was the Middle Passage, where enslaved Africans were transported from Africa to the Americas. Slaves were subjected to horrific conditions during this leg of the trade, resulting in a high mortality rate.
Step-by-step explanation:
The worst leg of the Triangle Trade route was the Middle Passage. The Middle Passage was the voyage across the Atlantic from Africa to the Americas, and it was the middle leg of the Atlantic Triangle Trade network. Slaves were segregated, chained, and kept in extremely tight quarters for long periods of time, leading to the death of as many as 12-13 percent of them.