Why is the phrase all men are created equal often referred to as a symbol of national aspiration and not as a statement of of law or custom

the correct answer is =   british soldiers attacked and killed five boston townspeople.

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: