USA HISTORY

WESTWARD EXPANSION INDUSTRIALIZATION URBANIZATION 1870 1900

AMERICAN INDUSTRY DEVELOPMENT IN THE GILDED AGE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The United States changed to standard time zones when ____
A
Congress passed a law establishing this system.
B
the major rail lines established them to keep better schedules and avoid wrecks.
C
factories demanded standard time schedules.
D
pressured by international organizations.
E
none of the above.
Explanation: 

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: -The use of local solar time became increasingly awkward as railways and telecommunications improved. Time zones were, therefore, a compromise, relaxing the complex geographic dependence while still allowing local time to be approximate with mean solar time.

Detailed explanation-3: -On November 18, 1883, America’s railroads began using a standard time system involving four time zones, Eastern, Central, Mountain and Pacific. Within each zone, all clocks were synchronized.

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