What does the cartoon of James Monroe on top of the world represent.

Explanation:

In this political cartoon, the author shows Uncle Sam standing on top of the world. This represents how much power that the America received from the Monroe Doctrine and shows their status in relation to the rest of the world.

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:

they supported black codes so the answer is a or b