USA HISTORY

Detailed explanation-1: -In northern cities, which had the largest immigrant populations, nativism-a set of beliefs favoring the interests of established inhabitants against those of immigrants-emerged in the 1830s but grew to a fever pitch by the late 1840s. White, native-born Americans felt threatened by immigrants on nearly every front.

Detailed explanation-2: -Nativism in the early twentieth century In reaction, some embraced nativism, prizing white Americans with older family trees over more recent immigrants and rejecting outside influences in favor of their own local customs.

Detailed explanation-3: -As a result, politicians and the press frequently portrayed immigration as a threat to the nation. By the early 1920s, these long-held nativist fears generated new restrictive legislation that would cause the number and percent of foreign-born in the United States to decline sharply for decades afterwards.