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Continue to ChatThe second and third generation effect of immigration accounts for only a small portion of the height shortfall between Americans and northern Europeans. Besides the slowdown in American heights began in the 1950s, well before large-scale immigration into the country. - Richard H. Steckel from https://whatsmyquote.com/quote/the-second-and-third-generation-effect-of-immigration-accounts-for-only-a-small-portion-of-the-height