In the same manner as the inexpressible cruelty of slavery could not stop us, the opposition we now face cannot keep us from achieving our goal
A detail is essential in a passage if it adds to the overall idea of the passage. In this passage, the overall idea is stated in the first sentence, several key human errors contributed to the spread of the Chicago fire of 1871. That means that key details in this passage will be something related to a human error. Out of all of our choices, the first one seems the most like a human error. The second, third, and fourth choices seem more like details then like essential details. That means that the answer to the question is John Dorsey sounded a general alarm during the blaze.
Answer:
Champollion published ideas about his research, whereas Young did not. Champollion used his wealth to assist in his research, while Young did not.
Explanation:
