30 How did the passage of immigration quotas at the beginning of the 1920s affect the economy?
Mechanization in factories increased
G Tariffs on imported goods were raised
H Taxes increased in order to cover war debts
I Job opportunities for native born Americans improved

lots of people lost money in both

the correct answers are 1, 2 5, 6

monopolies  came to the united states with the colonial administration. the large-scale public works needed to make the new world hospitable to old world immigrants required large companies to carry them out. these companies were granted exclusive contracts for these works by the colonial administrators. even after the american revolution, many of these colonial holdovers still functioned due to the contracts and land

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im not sure on this one