Choose the correct answer to complete the sentence. in the early 1860s, chinese immigrants came to the united states to

a. escape industrialization in china.
b. work in factories in chicago.
c. escape religious persecution.
d. work on the transcontinental railroad.

the united states didn't wanted to get involve with other countries probelms

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: