What is it called when congress passes a law

Enacted

Explanation:

Once legislation has passed both chambers of Congress in identical form, been signed into law by the president, become law without his signature, or passed over his veto, the legislation is enacted.

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:

after the senate and the house passed different bills and deadlock threatened, a compromise bill was worked out with the following provisions: (1) missouri was admitted as a slave state and maine (formerly part of massachusetts).