Final answer:
The Era of Good Feelings was a period of political harmony and national unity in the United States following the War of 1812.
Step-by-step explanation:
The period following the War of 1812 was called the "Era of Good Feelings" because both parties buried their differences, Congress passed protective tariffs, and reached an understanding with England over trade. This time period, from 1815 to 1825, saw a temporary decline in political party conflicts and an emphasis on nationalism and unity within the United States.
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