A.
Undermine
erode the base or foundation of (a rock formation).
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This statement is definitely TRUE, as the biggest negative effect of the industrialization was the impact on the environment. Many companies that supported industrialization did not push their weight to pay damages for the environmental harm which was caused because of their factories and so on. And after all, It led to extinction of species and spread of pollution.
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More Americans were able to buy homes after the WWII because of the purchasing power of the American Dollar. In order for the country to experience a drastic economic change, it had to change its policies about taxes, cost of living, and personal wages of its people. So during that time period, people had a lot of money and decided to change their old ways of living in the city and moving into the suburbs to buy a lot and build their own houses there. They found that life was more peaceful and quaint as compared to the city life that's why there was a boom in suburban life after the WW.
B) The 1920s mark the emergence of mass production and mass consumption
