Answer:
When the number of immigrants greatly outnumbers the indigenous population, nativist movements seek to halt cultural change. As a result of the influx of newcomers, native-born workers lose out on positions that would have been filled by immigrants, and wages fall as a result.
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Rockefeller was able to build his monopoly across the oil industry since he bought up oil refineries, cut costs, and reinvested his profits in other refineries.
Rockefeller was an American oil industry business magnate, industrialist, as well as philanthropist. He is widely regarded to as the wealthiest American of all time, and the richest person in modern history.
Rockefeller's wealth sky rocketed as kerosene and gasoline grew in importance, and he turnt into the richest person in the country, controlling 90% of all oil in the United States at his peak.
