Which of the following is one of the ways that climate and environment affected the development of civilization in north america? the adena and hopewell peoples were isolated by environment and were unable to engage in trade. populations in the northwest used their bountiful natural resources for food and trade. description

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: