Fred Korematsu sued US government because he believed his constitutional rights were violated when black.

Fred Korematsu argued that Executive Order 9066 was unconstitutional and that it violated the Fifth Amendment to the United States Constitution. The Fifth Amendment was selected over the Fourteenth Amendment due to the lack of federal protections in the Fourteenth Amendment. He was arrested and convicted.

the answer is "by providing data about careers and annual mean wages"

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: