Using the information from the seven documents in part A and your knowledge of US history, write an essay in Part B in which you: Discuss economic, political, and/or social differences between the North and South that eventually led to the Civil war. In developing your answers to part B, be sure to keep these general definitions in mind: discuss means “to make observations about something using facts, reasoning, and argument; to present in some detail” Guidelines: In your essay, be sure to: Develop all aspects of the task Incorporate information from at least four documents Incorporate relevant outside information Support the theme with relevant facts, examples, and details Use a logical and clear plan of organization, including an introduction and a conclusion that are beyond a restatement of the theme

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:

hi, according to my research the answer to the first question would be false. al tabari was the author of the first medical encyclopedia & he was a persian scholar not arab

copernicus finished the first manuscript of his book, "de revolutionibus orbium coelestium" ("on the revolutions of the heavenly spheres") in 1532. in it, copernicus established that the planets orbited the sun rather than the earth. he laid out his model of the solar system and the path of the planets.