Alma 17:26-30

Questions

Why are the servants described as "Lamanitish"? Are they a different ethnicity from the Lamoni or his people?
Sheep are unknown among pre-Columbian civilizations, so what kind of flocks are being tended here?
Why are we given the name of this "place of water"? What does Sebus mean?
What does it mean that "all the Lamanites" drive their flocks to the water of Sebus? Does that include all the Lamanites outside of the land of Ishmael?
This incident happens after only serving the king for three days. How is it that within just a few days Ammon is given the opportunity to win the hearts of his fellow-servants?

Who were these flock scatterers? Why are they described as Lamanites, while the servants are describes as Lamanitish? Were they from Lamoni's kingdom, or some other Lamanite kingdom?
What is going on with this incident? Why would the Lamanites scatter these flocks of a king?

Why would they take the flocks to the water of Sebus if the flocks have been scattered there before?
Why are the scatterers described by the servants as wicked?

Why was Ammon's heart "swollen within him with joy" at this affliction?
Does this provide a model for how we should act at work when we are faced with extreme challenges?
Do we see challenges at work as missionary opportunities?
How does Ammon think that solving this problem with the flocks will lead the servants to believe in his words?