Ownership of what two items were very important to Americans and greatly expanded during the 50’s?

Many Americans continued to live in poverty throughout the 1950s, especially ... In the United States, the post-World War II period was marked by this phenomenon. ... was an important component of the post-World War II economic boom in the ... The U.S. economy grew dramatically in the post-war period, expanding at an ...

500 books can be produced by one man and a printing press within 5 months, while a copyist can only produce one in the same amount of time

d. migration of french settlers into english colonies