The central plank of the Know-Nothing (American) party in the 1856 election was

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Nativism was the central plank of the Know-Nothing party's platform. The party was strongly anti-immigrant and believed in restricting immigration and naturalization to only those who had lived in the United States for a certain amount of time. The party was also known as the American Party and gained popularity in the 1850s, particularly in the Northeast and Midwest.

The Central Plank of the Know-Nothing (American) Party in the 1856