For what reason was the national judiciary created?

The Judiciary Act of 1789, officially titled "An Act to Establish the Judicial Courts of the United States," was signed into law by President George Washington on September 24, 1789. Article III of the Constitution established a Supreme Court, but left to Congress the authority to create lower federal courts as needed.

brainliest plz

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:

no options provided, here,but the answer to this question is often: a historian cites a japanese newspaper article published a year after the end of world war ii in order to draw conclusions about the effect of the war on the japanese economy.

clearly from the answer, the historian alludes to historical sources,and records to aid in analyzing and drawing conclusion on the effect of the war on the economy of japan.