Discuss how the Constitution was designed to help ensure liberty, justice and peace for U. S. citizens?

First it creates a national government consisting of a legislative, an executive, and a judicial branch, with a system of checks and balances among the three branches. Second, it divides power between the federal government and the states. And third, it protects various individual liberties of American citizens.

Explanation:

these civilizations were located around fertile rivers, where they could produce an abundance of crops

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: