I believe the answer on the above question is letter A which is
'Most Americans worked in the automobile industry or industries related to it." Because there are high demands of trucks and cars led to a rapid growth in the construction of all-weather surfaced roads to facilitate their movement
Interchangeable parts- are parts inside of a product that can be replaced individually, without having to replace the entire product
Assembly Line- is the concept of having workers lined up in a "row" and repeatedly do the same job the entire time. this helped with time consumption and made factorial processes much easier
The biggest reason behind changes to the Social Security Act (in 1939) was to make sure this program helped more people in American society. One of the amendments made to the Social Security Act was the implementation of survivor benefits. If a person was to die unexpectedly and had paid into the system, family members would be able to receive the money owed to that person who passed away unexpectedly.
Besides survivor benefits, retired workers collecting Social Security could set up a payment system where their children or spouse received money as well. All of these changes lead to Social Security having a more positive affect on the American family as a whole.
