USA HISTORY

Detailed explanation-1: -With the proliferation of railroads, faster travel became possible across many cities and travelers could sometimes arrive at an earlier local time than the one they had left. Due to this lack of time standardization, schedules on the same tracks often could not be coordinated, resulting in collisions.

Detailed explanation-2: -Each time zone is set one hour apart, which allowed the railroads to coordinate train schedules across the entire country.

Detailed explanation-3: -Which best explains how railroad companies were able to standardize their timetables in 1883? railroads made resources and products easier to transport.

Detailed explanation-4: -The need for continental time zones stemmed directly from the problems of moving passengers and freight over the thousands of miles of rail line that covered North America by the 1880s. Since human beings had first begun keeping track of time, they set their clocks to the local movement of the sun.