Final answer:
The term for anti-immigration feelings held by the Know Nothing Party is 'd) Nativism,' which represents an ideology favoring native-born individuals over immigrants.
Step-by-step explanation:
The term for anti-immigration feelings held by the Know Nothing Party and other similar groups is d) Nativism. This political position was characterized by a strong opposition to immigrants and the belief that native-born Americans were superior to foreign-born individuals. The Know Nothing Party, formed in the 1850s by the merging of the Order of United Americans and the Order of the Star Spangled Banner, sought to preserve native-born political power and restrict the rights and influence of immigrants, particularly those of Irish and German Catholic descent. Nativism refers to the belief that native-born citizens should have preference over immigrants and that immigrants pose a threat to the culture and values of the country. The Know Nothing Party, also known as the American Party, emerged in the 1850s and aimed to restrict immigration and limit the political power of naturalized citizens.