How 9/11 has affected and changed our society? (in a small paragraph)

The 9/11 has affected political, economical as well as social aspects of Americans. We see there were many changes in Society after the 9/11 attack. We see there began greater focus on home life and family, more church attendance as well as atheism and patriotism. There began more and more deportations of immigrants and racial discrimination and anti-Muslim violence all over the country.  

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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: