Highlight the central idea in pink and supporting details in yellow. 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) united to confirm in me this belief. Indeed such were the horrors of my views and fears at the moment that, if ten thousand worlds had been my own, I would have freely parted with them all to have exchanged my condition with that of the meanest slave in my own country. When I looked round the ship too and saw a large furnace or copper boiling and a multitude of black people of every description chained together, every one of their countenances expressing dejection and sorrow, I no longer doubted of my fate; and quite overpowered with horror and anguish, I fell motionless on the deck and fainted. Paraphrase the central idea.