"The Long March" occurred.
Answer:
The underlying cause of the war was the colonists unrelenting desire for more and more land, but the immediate cause for its outbreak was the trial and execution of three of Metacom's men by the colonists.
Explanation:
To keep the United States free from foreign entanglements. Basically to keep out of foreign issues that did not involve them.
Believed they had a right to take possession of western lands and use them as they saw fit.