[Bakary]

What I enjoyed about the Long Ships is how the author avoided moral handholding and let the reader make their own appreciation of it.

Interestingly, the contrast highlights the concept of master vs. slave morality pretty well. The Vikings see strength as the ultimate determinator and servitude as the appropriate result of weakness. Insofar as they have rules surrounding honor or other meta/legal considerations, these are there to facilitate the resolution of power struggles through duels or other such concepts. They nonetheless have a fairly stable civilization. And of course Christianity is the canonical (no pun intended) example of slave morality as identified by Nietzsche.