why did the development of time zones make train schedules more reliable?\no time zones set the entire…

why did the development of time zones make train schedules more reliable?\no time zones set the entire country to the same time.\no time zones measured time locally instead of country - wide.\no time zones made sure that each state was in only one zone.\no time zones created a standard of time that all trains followed.

why did the development of time zones make train schedules more reliable?\no time zones set the entire country to the same time.\no time zones measured time locally instead of country - wide.\no time zones made sure that each state was in only one zone.\no time zones created a standard of time that all trains followed.

Answer

Answer:

D. Time zones created a standard of time that all trains followed.

Brief Explanations:

Before time - zones, local times varied widely. Time - zones established a uniform time standard, allowing for more coordinated and reliable train schedules.