Answer: The pen name of Samuel Clemens is "Mark Twain".
Explanation:
It is safe to surmise that ghosts are a symbol of uncertainty.
Answer:
The brothers’ ability to overcome difficulties to succeed as scholars.
Explanation:
The excerpt begins by informing us of the difficult personal problems and the meager financial support that the brothers faced from 1805 to 1812. It also highlights that, despite these problems, the brothers could prove themselves as innovative scholars in German philology. Therefore, that the author introduces is the brothers’ ability to overcome difficulties to succeed as scholars.
