Answer:
The complexion
The language
The long hair
Step-by-step explanation:
From this excerpt, the narrator describes his experience as he first arrived the coast and how his astonishment at seeing the sea was quickly converted to terror when he realized he was no longer a spectator but now a part of the slave ship.
He described the captors and spoke about their differences with other slaves which included their complexion, hair and language.
"Their complexions too differing so much from ours, their long hair, and the language they spoke, (which was very different from any I had ever heard). . ."