There was a dramatic increase in catholic immigrants between 1820 and 1865 as an enormous surge of Catholic immigrants coincided with fear and mistrust among Protestants.
Over 30 million immigrants from Europe moved to the United States between 1840 and 1924. Many of them were Catholic and came from places like Poland, Sicily, and Ireland in the east, south, and north, respectively.
Political cartoonist Thomas Nast regularly deride Irish Catholic immigrants in the late nineteenth century, calling them uncivilised and unfit for citizenship; signs that read "No Irish Need Apply" lined store windows in Boston and New York; statesmen warned against letting Catholics from Southern and Eastern Europe enter the country for fear that they were less than clerical (and less than white).
To learn more about Catholic immigrants, refer
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