The period following the war of 1812 was called the "era of good feelings" because:
the republican party died out
federalists held political power
both parties buried their differences
all of the above
onone of the above

The actual reason is not in the option so “none of the above”.

Explanation:

americans had many intangible advantages. well since the british fought a war far from home military orders, troops, and supplies sometimes took months to reach their destinations, and the british had an extremely difficult objective. they had to persuade the americans to give up their claims of independence, americans had a grand cause: fighting for their rights, their independence and their liberty. this cause is much more just than waging a war to deny independence.

- encouraging nationalism

- returning to conservative political policies