It's "my feelings were not the result of any marked cruelty in the treatment I received; they sprung from the consideration of my being a slave at all. (I believe this is correct cause he thought he was a slave himself. And obviously didnt like it
Analogies are fun. In this one, difference is to opposite as catastrophe is to disaster. Difference and opposite are synonyms, so the blank is a synonym.
Xerox and Google both give document and website solutions to searched problems or questions. They both advertise products and sell technology on the internet.
