How did the affordability of cars and the building of roads change how Americans spent their free time?

People have more personal freedom and access to jobs and services thanks to the automobile. It resulted in the construction of better roads and transportation. To meet the need for automotive parts and fuel, new industries and employment arose. Petroleum and gasoline were among them, followed by rubber and plastics.

Explanation:

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answer: the time zones used to be whatever the local authority wanted them to be. one town might have 6am whenever the sun came up and another town had 6am 10 minutes later.  

the trains had a hard time when their orders said to be at a certain point at 6am.  

6am, but who's 6am.  

the railroads got together and set the time zones more or less along the longitude lines across the country.

explanation: