Final answer:
During President James Monroe's term, the one-party government system was known as the Era of Good Feelings. This period reflected national unity and optimism following the War of 1812 and the collapse of the Federalist Party.
Step-by-step explanation:
During President James Monroe's term, the one-party government system was known as the Era of Good Feelings. This period lasted from 1817 to 1825 and was characterized by a sense of national unity and a lack of political divisions. The Era of Good Feelings reflected Monroe's policies and the general public's optimism following the War of 1812 and the collapse of the Federalist Party.
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