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Doing so showed that there was another variable that was a strong predictor of a person’s securing an entry in Wikipedia: the proportion of immigrants in your county of birth. The greater the percentage of foreign-born residents in an area, the higher the proportion of children born there who go on to notable success. (Take that, Donald Trump!) If two places have similar urban and college populations, the one with more immigrants will produce more prominent Americans. What explains this? A lot of it seems to be directly attributable to the children of immigrants. I did an exhaustive search of the biographies of the hundred most famous white baby boomers, according to the Massachusetts Institute of Technology’s Pantheon project, which is also working with Wikipedia data. Most of these were entertainers. At least thirteen had foreign-born mothers, including Oliver Stone, Sandra Bullock, and Julianne Moore. This rate is more than three times higher than the national average during this period. (Many had fathers who were immigrants, including Steve Jobs and John Belushi, but this data was more difficult to compare to national averages, since information on fathers is not always included on birth certificates.)
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