The Know Nothing Party was a movement that grew in the United States during the 1850s which sought to undermine immigrant voting strength. The movement was against immigrants with strong anti- Irish Catholic sentiments. Therefore, the answer to this question is A.
The Know-Nothing Party aimed to restrict immigrant political power, primarily targeting Irish and German Catholics. Their goal was to undermine immigrant voting strength, reflecting a strong nativist sentiment. Therefore, the correct answer is A : It wanted to undermine immigrant voting strength.
;