When one central authority holds the power, what type of government is it? O unitary Me
O democracy
O federal
O parliamentary

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:

you can't, there's no way sorry

a reason that was key to coolidge's victory in the 1924 presidental election was that; democratic party supporters were split in the north and south.