Why did railroads initially divide the united states into four standard time zones

answer:

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Explanation:

answer: Haiii! According to Quora, "They followed the British lead. The railways in Britain had to introduce a standard time at railway stations to avoid confusion which could lead to train collisions. Prior to that every town had its own version of the time of day, often set by someone’s sundial. These could be different by several minutes. This did not matter much when road traffic between towns traveled at 8 mph at most, but even in the earliest times trains were running at 25 to 45 miles per hour.

Five minutes or less difference between one town and another could cause disasters.

In the USA it was more complex because of the width of the country. Sunrise in New York was three to four hours before sunrise in San Francisco. The simplest thing was to introduce time zones so that as a train passed a state border, a particular river, a town or some other landmark the train staff changed their watches by an agreed amount, usually one hour."

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