How many amendments were there since 1787

27

Explanation:

27 amendments

Explanation: 27 amendments have been approved since 1787. 33 amendments were written by Congress, but only 27 of them were ratified.

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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: