Answer:
i think because they were not good even i think dont know for sure
Explanation:
The answer is 1920 i hope this helped <3
Generally speaking, industrialization greatly reduced social inequality by creating a "middle class" of people, who were able to significantly increase their incomes due to the large number of jobs available in factories.
The atlantic ocean
the pacific ocean
the rio grande
the gulf of mexico
and yeah thats all the ones I can think of. :D