Why was the the era of good feelings given its name?

The "Era of Good Feelings," which lasted from approximately 1815 to 1825, was named for the national sense of unity and optimism that followed the War of 1812. During this period, the Democratic-Republican Party dominated American politics, leading to a decline in partisan conflicts. Additionally, economic growth and territorial expansion contributed to a generally positive atmosphere across the country, fostering a belief in national progress and the potential for a bright future. However, underlying issues such as regional tensions and economic disparities would later challenge this sense of harmony.