They were tasked with protecting the movement of trade goods. They also kept defense of the northern and western frontier against Indian and Mexican incursions, defense of the coast against Union invasion, and suppression of Union loyalists within Texas.
The northeastern farmers migrated to the west in order to make living. When they were in the west, they start over on u farmed lands.
Hope this helps.
Answer:
it stopped Japanese advancement into the Pacific Ocean and put Japan's navy on the defensive
Explanation:
