This is because slaves from Africa were used to the heat and would be able to endure it longer than slaves from other countries.
No. In fact Abraham Lincoln didn't want to stop slavery. He only wanted to stop the spread of it to other states.
The voice that you hear in a story is the voice of the narrator, and told either in first person or third-person. Details tell you how the narrator feels about the characters and events. From the first page of "How Mighty Kate Stopped the Train," I see that the story is told from the third-person point of view.
