Answer: it is most definitely true
They were constantly having troubles with the natives that had inhabited the area beforehand (wars). This prevented them from permanently settling somewhere.
Answer:
https://plato.stanford.edu/entries/frederick-douglass/
Explanation:
Take off D; the North had won some battles up to that point. Rip off A; the South would never let go of slavery. Take off B, since the Union had some wins already. You can now clearly see where the answer is.